FORT MORGAN, Colo. -- At about 10:25 p.m. March 20, Fort Morgan Police officers surrounded a property in Fort Morgan, looking for a known violent parolee.

He was wanted on assault charges and parole violations that stemmed from a call the weekend prior. Investigation of this call resulted in a warrant for the arrest of Sergio Martinez, 29, of Fort Morgan, for Second Degree Assault and kidnapping, who had been hiding from police since the warrant was obtained.

Martinez was found guilty on all charges at trial on November 21. His sentencing is scheduled for 9 a.m. Jan. 16, 2026.
 

When officers received information about the whereabouts of Martinez, the Fort Morgan Police Department deployed a drone along with several officers to locate him. Morgan County's K9 Dobby was called to assist. He was taken into custody without incident.

Martinez has a long history of violence dating back to his time as a juvenile when he was adjudicated as an adult for a robbery in 2013. He was sentenced to two years in the Department of Corrections. In October 2016, he was arrested by the Fort Morgan Police Department for a case that was originally charged as kidnapping, menacing, assault, and domestic violence (among other charges). The case was later pled down to a misdemeanor assault, and Martinez was sentenced to 18 months’ probation.
 
In December of 2016, he was arrested in Aurora after failing to comply with probation on the original charges from the Fort Morgan case.
 
While serving his sentence in the Department of Corrections, in 2017, Martinez was arrested and charged with Attempted 1st Degree Murder, among other charges, and eventually pleaded guilty to the charge of Second Degree Assault. As a result of this agreement, he was sentenced to 10 years in the Department of Corrections, with three years of mandatory parole. He was released after serving seven years and was living back in Fort Morgan at the time of his latest charges.