The day after Christmas, Corporal Ronil Singh was already back to work as a police officer. Early in the day, he noticed a gray pickup truck driving down the road without a license plate, so he initiated a traffic stop. He radioed in the routine traffic stop before exiting his car and approaching the truck. Tragically, the suspect shot at the officer who was fatally wounded.

On December 28th, authorities finally tracked down and arrested the suspect. He has been identified as 33-year-old Gustavo Perez Arriaga, an immigrant from Mexico who illegally came across the border several years ago. He was well-known to authorities because he has been arrested twice for DUIs and is affiliated with the violent Sureños street gang.

According to Adam Christianson, a County Sheriff with the Stainslaus Police Department, Arriaga was attempting to flee back to Mexico when he was located. After fatally wounding the officer, two individuals helped him evade officers and hide. The two accomplices have both been taken into police custody and charged with being an accessory after the fact. They have been identified as the suspect’s brother, 25-year-old Adrian Virgen, and 32-year-old Erik Razo Quiroz.

County Sheriff Christianson told media outlets that the motive behind the violent crime remains unclear. The suspect was tracked down nearly 280 miles away from where the crime took place, but he attempted to hide out in a house that was already under law enforcement surveillance. Christianson explained that the undocumented immigrant was never previously deported because sanctuary laws prevented local police from reporting his status to ICE agents when he was arrested in the past.