Watch Live: Senate Impeachment Trial of President Trump

Tracy police make arrest in September homicide; search for second suspect

Photo by Tracy Police Department

Enrique Guillen-Valles, 21 (Photo courtesy of the Tracy Police Department)

TRACY, Calif. (KTXL) — After arresting one suspect, Tracy police say they are searching for a second suspect in a homicide that occurred in September.

Nicole Diaz, 28 (Photo courtesy of the Tracy Police Department)

On Sept. 21, police say 21-year-old Enrique Guillen-Valles and 28-year-old Nicole Diaz were involved in the killing of Nikolis Martinez.

Investigators believe the suspects knew Martinez and the homicide was not random.

Diaz was arrested but Guillen-Valles is still at large, according to police.

Police say Guillen-Valles possibly fled the area and should be considered armed and dangerous.

If anyone has any information, they are asked to contact Detective Jesser at 209-831-6640.

Notice: you are using an outdated browser. Microsoft does not recommend using IE as your default browser. Some features on this website, like video and images, might not work properly. For the best experience, please upgrade your browser.