Week of Oct. 26, 2026: Former Greeley Officer Arrested on Domestic Violence Charges
Welcome to our weekly sum-up. Every Monday we send out a short summary of the last week’s officers that have landed on Colorado’s Peace Officer Standards and Training public database of law enforcement misconduct and actions. These actions from POST are not necessarily only those that have happened in the last week, but those that have been added, and consist of any other context we could find. Additionally are officers with otherwise obvious misconduct from around the same time.
This week we have terminations all over added to POST, but particularly a group of detentions or corrections deputies terminated as far back as April.
Thomas Girten (CO-5037-9354)
- Arrested Oct. 22 on domestic violence-related charges of harassment through insults, taunts or challenges.
- Resigned while under investigation from Greeley Police Department on June 16, 2025.
- Neither Greeley nor Greeley Police Department responded to a Oct. 28 request for relevant records before publishing.
Sources:
- POST Database
- Larimer County Court
Sean Halloran (CO-5246-3334)
- Resigned in lieu of termination for cause as a deputy with El Paso County Sheriff's Office on Oct. 1.
- El Paso County Sheriff’s Office did not respond to a Oct. 28 request for relevant records before publishing.
Sources:
- POST Database
Trevor Woods (CO-0528-0177)
- Terminated for cause from Westminster Police Department on Sept. 2.
- Neither Westminster nor Westminster Police Department responded to an Oct. 28 request for relevant records before publishing.
Sources:
- POST Database
Valentino Tyler (CO-030-846)
- Resigned/retired prior to investigation as an officer with Fort Lewis College Police Department on Sept. 22.
Sources:
- POST Database
Silvia Reyes (CO-4546-3246)
- Terminated for cause as a corrections deputy with Larimer County Sheriff's Office on June 1.
- Larimer County Sheriff’s Office did not respond to an Oct. 29 request for relevant documents before publising.
- Hired August 2022.
Sources:
- POST Database
- Larimer County
Sara Gardner (CO-003-472)
- Resigned in lieu of termination for cause as a detentions sergeant with Montezuma County Sheriff's Office on April 17.
- Disciplinary documents refer to “off-duty incidents” involving Gardner and another detention deputy on March 10, 13 and 14 regarding “criminal acts” that violate various internal policies including violations of any law that are “willful or inexcusable or involve moral turpitude,” acts that may bring discredit to the agency and acts with willful intent to deceive on any public or office records.
- MCSO did not supply other requested documents including internal affairs reports and did not respond with statute supporting not releasing those documents before publishing.
- Montezuma County did not respond to an Oct. 28 request for relevant records before publishing.
Sources:
- POST Database
- Montezuma County Sheriff’s Office
Karrem Samuels (CO-4546-3253)
- Terminated for cause as a corrections deputy with Larimer County Sheriff's Office on Sept. 9.
- Larimer County Sheriff’s Office did not respond to an Oct. 28 request for relevant records.
Sources:
- POST Database
Jay Rigdon (CO-135907)
- Charged with harassment through striking, shoving or kicking on Oct. 28 for actions from August.
- Terminated for cause as a corrections deputy with Montrose County Sheriff's Office on Oct. 6.
- Neither Montrose County nor Montrose County Sheriff’s Office responded to a Oct. 29 request for relevant documents.
Sources:
- POST Database
Timothy Sparks (CO-1709-2690)
- Terminated for cause as a deputy with Lake County Sheriff's Office on Sept. 3.
- Neither Lake County nor Lake County Sheriff’s Office responded to an Oct. 28 request for relevant records before publishing.
- Hired November 2022.
Sources:
- POST Database
- Larimer County
Alejandro Alvarado (CO-715-003)
- Issued a credibility report as an officer with the Denver Regional Transportation District Police Department on Oct. 23.
- Resigned while under investigation as an officer with the Denver Regional Transportation District Police Department on July 16.
- According to an internal affairs report:
- Alvarado and another officer woke up a person sleeping on the light rail train on July 6. Alvarado claimed at the scene and in his report that the person swung a closed right fist within two feet of his face and swung a left fist “in the fashion of a jab” while rising to his feet.
- The report states that this doesn’t match the camera footage, along with other descriptors by Alvarado including when the person was standing versus sitting and how far away they were.
- The report describes the bodycamera footage showing the person “startled awake,” waving the two officers away and then assumed a “defensive stance” while seeming “disoriented,” before realizing they were officers and complying with their commands. Alvarado arrested the person for a felony charge of second degree attempted assault on a peace officer.
- The internal affair report concludes that Alvarado “misrepresented material facts” regarding the alleged assault and “provided false or misleading statements both on scene and in his official report.”
- The charge was dropped, and Alvarado was found to have violated six internal policies regarding performance, conduct and “constitutional requirements.”
- Alvarado had sent a resignation letter to RTD Police Department on July 1, stating his last day to be July 15, due to accepting a job offer from another agency out of state.
Musa Ayoub (CO-8265-8118)
- Terminated for cause as an officer with Thornton Police Department on Oct. 6.
- Previously subject of an investigation by the 17th Judicial District Critical Incident Response Team for shooting a man on Aug. 20, 2024 along with two other Thornton Officers. The District Attorney did not file charges against him or the other officers.
Sources:
- POST Database
- 17th Judicial District Attorney’s Office
Joaquin Reyna (CO-815-211)
- Terminated for cause as a parole officer with the Colorado Department of Corrections on Oct. 21.
Sources:
- POST Database
Craig Beauchamp (CO-731-014)
- Resigned in lieu of termination for cause as an officer with Durango Police Department Sept. 17.
- Hired May 2023
Sources:
- POST Database
- Durango
