U.S. Marshals Task Force Arrests Oklahoma Murder Suspect in Alamosa

Alamosa, CO – A fugitive wanted on a first-degree murder charge was taken into custody Tuesday following a coordinated effort by federal and local law enforcement agencies.

Charles Shamblin, 35, was arrested Tuesday by members of the U.S. Marshals Service (USMS) Colorado Violent Offender Task Force (COVOTF) from the Alamosa County Sheriff’s Office and Alamosa Police Department. The arrest took place after investigators from the Sequoyah County Sheriff’s Office developed information indicating Shamblin was in the Alamosa area.

Shamblin was one of three men charged in 2016 in connection with the murder of Matthew Fagan, a 23-year-old who disappeared while hiking near Lake Tenkiller. According to investigators, Shamblin and co-defendant Tyler Leverett stated that Michael Snelling committed the murder and then allegedly threatened them into helping conceal the body. Shamblin was released in 2017 due to a lack of corroborating evidence as the victim’s body had not been located. In November 2024, a body was discovered and was positively identified as the victim, Matthew Fagan, in December 2025. This led to new evidence and an arrest warrant being issued on April 28.

That same day, the COVOTF received a collateral lead request from the U.S. Marshals Eastern District of Oklahoma to assist in locating and apprehending Shamblin on the new warrant for first-degree murder and accessory after the fact. Acting on investigative leads, Task Force Officers (TFOs) responded to an apartment complex near W 10th and Hwy 285 in Alamosa, where Shamblin was believed to be staying. Upon arrival, COVOTF TFOs made contact at the apartment and Shamblin was located inside where he was taken into custody.

Following his arrest, Shamblin was transported to the Alamosa County Detention Center, where he was booked on the active warrant out of Sequoyah County, Oklahoma.

The success of this arrest represents a culmination of extensive cooperative investigative efforts between the Alamosa County Sheriff’s Office, Alamosa Police Department, Sequoyah County Sheriff’s Office, the U.S. Marshals Colorado Violent Offender Task Force, and the Eastern District of Oklahoma Violent Crimes Fugitive Task Force (VCFTF).

The Colorado Violent Offender Task Force is a multi-jurisdictional fugitive task force that targets the most violent offenders to include those wanted for murder, assault, sex offenses, and other serious offenses throughout the state and country. The United States Marshals Service also works closely with state and local agencies nationwide to locate and apprehend fugitives who flee across state lines to avoid prosecution. Through its network of 58 district task forces and 8 regional fugitive task forces, the agency remains committed to ensuring that offenders are held accountable — no matter how long they attempt to evade justice.

Tips can be submitted to the U.S. Marshals Service directly and anonymously by downloading the USMS Tips app to your Apple or Android device. It can also be accessed online at https://www.usmarshals.gov/tips. You can also follow the latest news and updates about the U.S. Marshals Service in Colorado on X (formerly Twitter): @USMSDenver.