Below is a list of the teen killers from Colorado. The first list below are those sentenced to life without parole for their crimes. Columbine follows. Please send us any other cases we should know about. See our victim memorial pages for some of the victim stories.
We oppose legislation in Colorado, regularly proposed by the Pendulum Foundation funded by one of the families of these offenders below, that would retroactively end these life sentences for these murderers sentenced to what they call juvenile life without parole (JLWOP) because the hearings on the bill are being held without victim notification and because there already exists legal mechanisms, including a special clemency commission, to identify any offenders who might have been over-sentenced. Victims have rights to be notified of and heard in all matters pertaining to their cases.
RECENT NEWS STORIES ON COLORADO TEEN KILLERS
Austin Stig sentenced to life after predatory killing of 10 year old girl.
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Colorado Teen Killers Sentenced to Life for their Crimes:
Jason Gonzales, 17 MURDERED LeLand Hap Thompson, 74, repeatedly beaten on the head.
Samuel Mendez, 14, MURDERED Freida Winter, 78, beating in Greeley, police linked hom to the slaying four years later through fingerprints.
Marcus Fenandez, 15, MURDERED Lyle Wohlers, 51, Colorado State Patrol Trooper, shot in the head during a traffic stop.
Jacob Ind, 15, MURDERED Kermode Jordan 54, and Pamela Jordan, 41, his stepfather and mother, shot and stabbed them to death in their home.
Phillip Trujillo, 15, MURDERED Lee Pumorey, 16, grandson of former Colorado Supreme Court Justice, killed in a drive by shooting.
Allen Lucero, 17, MURDERED Chris Romo, 17, killed in a gang-related shooting.
Christopher Selectman, 16, MURDERED McKinley Dixon, 18, shot to death over a bag of marijuana.
George Chavez, 15, MURDERED Simplicio Dominquez Trejo, 34, carjacked and then killed.
Gregory Romero, 17, MURDERED Terrance Mayo, 17, and Rachel Peterson, 16, shot to death.
Raymond Gone, 16, MURDERED Shawn Leinen, 28, Denver Police Officer shot while cornering a car thief.
Donnell Carter, 17, MURDERED Terrance Mayo, 17, and Rachel Peterson, 16, shot to death.
Raymond Johnson, 16, MURDERED Cannon “Biscuit” Evans, 3, killed in a drive by shooting while sitting in a car seat.
Paul Littlejon, 15, MURDERED Cannon “Biscuit” Evans, 3, killed in a drive by shooting while sitting in a car seat.
Roosevelt Harris, 15, MURDERED Christopher Ramos, 24, shot in the head outside a credit union where he was using an ATM.
Curtis Brooks, 15, MURDERED Christopher Ramos, 24, shot in the head outside a credit union where he was using an ATM.
Raymond Cain, 17, MURDERED Said Frost, 19, a Southern Ute tribal member, shot in the head
Jennifer Tombs, 16, MURDERED Latanya Lynn Lavallais, 23, a babysitter, shot in the head six times.
Larry Lucas, 16, MURDERED Shaw Castilla, 18, a high school student, his body was found near the top of Raton Pass three days after his death.
Christopher Weedman, 17, MURDERED Tiffany Boelter, 14, mutilated.
Kevin Blankenship, 16, MURDERED Barbara Jane Castor, 76, kidnapped and left to die of exposure
Antonio Farrel, 17, MURDERED Barbara Jane Castor, 76, kidnapped and left to die of exposure.
Trevor Jones, 17, MURDERED Matthew Foley, 16, shot in the head in a parking lot.
Frank Vigil, 16, MURDERED Brandy Duvall, 14, gang raped and stabbed 28 times, bled to death.
Adam Drake, 17, MURDERED Eric Harris, 30, shot five times
Nathan Ybanez, 16, MURDERED Julie Ybanez, 43, his mother, beaten and strangled to death with fireplace tongs.
Terrance Wilder, 17, MURDERED Joel England, 24 and Roderaick Marable, 38, beaten to death.
Steven Anaya, 17, MURDERED Gregorio Martinez-Luna, 40, shot to death
Andrew Medina, 15, MURDERED Kristopher Lohrmeyer, 17, shot in the head outside an ice cream parlor.
Miguel Timble, 17, MURDERED Ennis Walton, 29, shot in the chest.
Lorenso Montoya, Jr., 14, MURDERED Emily Johnson, 29, clubbed to death.
Nicholas Martinez, 16, MURDERED Emily Johnson, 29, clubbed to death.
George Lo, 17, MURDERED Vien Than, 19, shot when gunman opened fire on two carloads of people.
Alexander Pogosyan, 17, MURDERED Edgardo Moralles, Jr., 18, Zach Obert, 18, Penny Bowman-Meida, 37, Greg Media 18, Marissa Avalos, 16, shot to death on the Labor Day holiday.
Joseph Hunter, 17, MURDERED Dorothy Woodham, 86, clubbed with a fireplace shovel, strangled, and stabbed 16 times.
Ahmad Nelms, 17, MURDERED Ennis Walton, 29, shot in the chest.
Erik Jensen, 17, MURDERED Julie Ybanez, 43, beaten and strangled to death with fireplace tongs. His family has funded the Pendulum Foundation which has led the anti-victim effort to free these offenders without victim input. It is reported that Eric Jensen’s threats to his own family that he would kill himself if they didn’t do something to get him out within 10 years, is what prompted the creation of the effort in Colorado to end JLWOP sentences.
Merle Mangum, 17, MURDERED Janet Davis, 42, and daughter Jennifer, 11, beaten to death.
Columbus White, 17, MURDERED Lora Armenta, 86, beaten to death when her home was burglarized.
Gabrial Adams, 17, MURDERED Kermode Jordan, 47, and Pamela Jordan, 41, shot and stabbed to death in their home
Jeff Johnson, 17, MURDERED John Leonardelli, 55, robbed of his car, watch, and other valuables and killed in a parking garage.
Leroy Gardenhire III, 17, MURDERED Tommy Lee Emory, 26, shot when his killers mistakenly thought he had stolen their car.
Marcus Clouatre, 17, MURDERED Douglas Sparr, 34, son of a federal court judge, bound and gagged, blindfolded, stabbed, and hit on the hdea, strangled with cords and had bleach poured down his throat.
Jerome Perea, 17, MURDERED Yvonne Cossio, 24, gunned down in her front yard in front of her children.
Josiah Ivy, 16, MURDERED Stacy Dahl, 29 and Gary Alflen, 47, shot to death in their Ute Pass home.
THE COLUMBINE KILLERS – Littleton, Colorado, 1999
Two of the worst teen killers in world history were Dylan Klebold and Eric Harris. Significant space in global media has been dedicated to covering this horrific mass murder – we do not need to duplicate it at this website. However, we highlight the important research that has been done into what we can learn from this unmitigated tragedy – how to identify and hopefully prevent future such rampages by similarly troubled youth. Read about the important findings in research done about these teen killers, and how this should inform ALL who interact with troubled teens in our nation. And we are especially proud of the advocacy work being done by some of these victims families to prevent future such tragedies. Check out Rachel’s Challenge working all over the nation to better identify and assist troubled youth. And we remain constantly inspired by the violence prevention work of Tom Mauser, father of Daniel Mauser.
PROFILES
Andrew Graham’s Killers
Murderers and alleged murderers: A 16-year-old, whose initials are T.J.; Allen Ford, 18; Joseph Martin, 16; and Clarissa Lockhart, 19
Victim: Andrew Gelston Graham, 23
Death Crime date: November 5, 2009
Location: Centennial, Colorado
Crimes: Murder & robbery
Weapon: Firearm
Ford
Martin
Summary of the crime
Andrew
Andrew was robbed and murdered by a gang of five perpetrators in a racially motivated attack. The assailants spotted the University of Colorado graduate at the light rail station in downtown Denver and followed him to Centennial for about 40 minutes. They then shot him in the back and robbed him.
Details
Andrew Graham’s Killers
Austin Sigg
Victim: Jessica Ridgeway, 10
Age at time of murder: 17
Crime location: Westminster, Colorado
Crime date: October 5, 2012
Crimes: Abduction, kidnapping, torture, & murder
Murder method: Strangulation and drowning
Weapon: Zipties & hands for strangulation & a bathtub filled w/ water for drowning
Murder motivation: Sexual fantasy
Sentence: 40 years to life plus 86 years
Incarceration status: Incarcerated at an undisclosed location
Summary
Sigg kidnapped Jessica as she was walking to school, bound her, and took her to his residence where he brutalized her. He then murdered her by strangling and drowning her and dismembered her body. Sigg later admitted that he was fulfilling a sexual fantasy. Rather than being an impulsive youthful act, the crime had been planned for months. Sigg also attempted to kidnap a female jogger prior to murdering Jessica.
Sigg pleaded guilty to all counts. The first-degree murder charge carried an automatic 40 year to life sentence. The judge added 86 years on top.
Details
Austin Sigg
Dylan Klebold
Harris (left) and Klebold (right)
Name: Dylan Bennet Klebold
Victims: Cassie Bernall; Steven Robert Curnow; Cory Tyler DePooter; Kelly Fleming; Matt Kechter; Daniel Mauser; Daniel Rohrbough; Rachel Scott; Isaiah Shoels; John Tomlin; Lauren Townsend; Kyle Velasquez; and Coach William “Dave” Sanders
Age at time of murder: 17 & seven months
Partner in crime: Eric Harris, 18 & 11 days
Crime location: Columbine, Colorado
Crime date: April 20, 1999
Crimes: Mass murder
Weapons: Intratec TEC-9 Mini; Hi-Point 995 Carbine; Savage 67H pump-action shotgun
Stevens 311D double barreled sawed-off shotgun; 99 explosives: & knives
Murder method: Gunshots
Status: Deceased
Summary
Harris and Klebold murdered 13 people and injured 24 others during one of America’s most infamous school shootings. The mass murderers planned the attack for about a year and wanted to kill as many people as possible. After committing the massacre, both men killed themselves.
Details
Dylan Klebold
Click to access Columbine%20-%20Governor’s%20Commission%20Report.pdf
Jovani Muniz
Victim: Eloy Conrad Duran III, 25
Age at time of murder: 17
Crime location: Denver
Crime date: January 3, 2010
Murder method: Beating and stabbing
Charge: First-degree murder
Conviction: Guilty plea to second-degree murder
Sentence: Seven years in the youth offender system plus a suspended 21 year sentence in the adult system
Summary
Conrad, a young father, was attacked, beaten, and stabbed to death.
Details
Karen Grammer’s killers
Victim: Karen Elisa Grammer, 18
Murderers: Freddie Glenn & Michael Corbett
Crime date: July 1, 1975
Crime location: Colorado Springs
Crimes: Attempted robbery, kidnapping, abduction, rape, & murder
Murder method: Stabbing
Incarceration status: Glenn is in the Fremont Correctional Facility and has a parole hearing in May 2021 while Corbett is deceased
Summary
Karen, the younger sister of actor Kelsey Grammer, was kidnapped and taken hostage by the assailants after they unsuccessfully attempted to rob the Red Lobster restaurant where she worked. Corbett and Glenn took the 18-year-old to an apartment where they repeatedly raped her over a four-hour period. The perpetrators then took her to a mobile home park and stabbed her to death.
Glenn and Corbett were initially sentenced to death but had their sentences commuted. Corbett died in 2019. Glenn is still in prison and has been denied parole several times.
Glenn and Corbett also murdered Daniel Van Lone and Winfred Proffitt.
Details
Marcus Fernandez and T.J. White
Victim: Officer Lyle Wohlers, 51
Ages at time of murder: 15
Crime date: November 4, 1992
Crime location: Near Georgetown
Weapon: .38 caliber handgun
Sentences: Fernandez– life without parole (LWOP) and then reduced to 46 years; White– 32 years
Incarceration status: White was released after 11 years while Fernandez is incarcerated at the Buena Vista Correctional Facility and has a parole hearing April 2032
Summary
Fernandez shot and killed Lyle during a traffic stop. He was sentenced to LWOP but later had his sentence reduced to 46 years. His accomplice White was sentenced 32 years and was released after 11 years.
Details
Mayco January
Victims: David Dunlap, Whitney Butler, & their unborn baby
Age at time of murder: 17 & eight months
Crime location: Colorado Springs
Crime date: January 14, 2013
Crimes: Home invasion, burglary, & murder
Weapon: 40-caliber semiautomatic pistol
Murder method: Gunshots
Sentence: Life with parole
Incarceration status: Incarcerated at the Buena Vista Correctional Complex & has a parole hearing in May 2115
Summary
After Whitney and David learned from their home security provider that their burglary alarm had gone off they went to their house to check. There, the recently married couple found January–a nearly-18-year-old with an extensive criminal history, including robberies and assaults on a 71-year-old woman and an attack on a 15-year-old girl. He had recently ran away from a halfway house for troubled youth and was armed with a gun which he had stolen from a nearby home. January fatally shot David, a Fort Carson soldier, in the back of the neck and Whitney in the head. By killing Whitney, he also killed the couple’s unborn child, who was due in six months. January was convicted and sentenced to life with parole.
Details
Raheem Benson and Louis Lara-Macias
Names: Raheem Vaughn Benson and Louis Fernando Lara-Macias
Victim: Nicholas Andrew Lewis, 33
Crime date: October 1, 2016
Location: Englewood
Ages at time of murder: Both 16
Crimes: Murder, thrill-killing, & attempted robbery
Murder method: Gunshot to the aorta
Murder motivation: Thrill and exhilaration
Incarceration status: Lara-Macias is incarcerated at the Youthful Offender System-Pueblo and is scheduled to be released on 10/14/2023 while Benson is at the Sterling Correctional Facility and has a parole hearing in September 2056
Summary
Benson and Lara-Macias shot Nick, a 33-year-old father and successful chef, to death as he was trying to walk home from a 7-11. The killers’ main purpose was to experience thrill and exhilaration.
Details
Trevor Jones
Victim: Matthew Foley, 16
Age at time of murder: 17
Crime location:
Crime date: November 21, 1996
Crimes: Armed robbery & murder
Weapon: Firearm
Murder method: Gunshots to the head
Murder motivation: Robbery
Convictions: Reckless manslaughter & robbery, which together made it felony murder
Sentence: Life without parole (LWOP) and then re-sentenced to 42.5 years
Incarceration status: Incarcerated at the Fremont Correctional Facility & has a parole hearing in May 2031
Summary
Jones organized a scam in which he would meet Matthew to sell him a gun, and then take the weapon back to show how to load it. Then he would rob Matthew at gunpoint and leave. However, Jones ended up shooting Matthew in the head as well, killing the 16-year-old. Jones was found guilty of felony murder and sentenced to LWOP. His sentence was later reduced to 42.5 years.
Details
Verle Mangum
Victims: Jennifer Davis, 42, & Janet Davis, 11
Age at time of murder: 17
Crime location: Clifton, Colorado
Crime date: February 15, 1996
Crimes: Child sexual abuse & murder
Weapon: Baseball bat
Murder method: Bludgeoning
Sentence: Life without parole (LWOP)
Incarceration status: Incarcerated at the Arkansas Valley Correctional Facility
Summary
Mangum was convicted of murdering Janet and her 11-year-old daughter Jennifer. In 2019 a Ninth Judicial District Court judge ruled that Mangum had insufficient legal representation and is entitled to a new trial. The victims were bludgeoned to death with a baseball bat after Janet allegedly discovered Mangum sexually abusing Jennifer.
