A 68-year-old man was fatally stabbed on a residential street in Martinez, California, on Thursday evening, according to the Martinez Police Department. The victim, identified as Todd Stewart, was found with injuries consistent with a stabbing.

Police received multiple 911 calls around 5:09 p.m. on August 6, reporting the stabbing on Francis Court. Responding officers found Stewart on the ground, where he was pronounced dead at the scene by firefighters and medical personnel.

The suspect fled the area before police arrived and was last seen leaving in a Cadillac SUV. The motive for the stabbing remains unclear.

Detectives from the Martinez Police Department and crime scene investigators from the Contra Costa County Sheriff’s Office are investigating the incident. Authorities have released images of the suspect and the vehicle in an effort to identify and locate the individual responsible.

A light-colored SUV, possibly a Cadillac SRX, with dark tinted windows, parked on a street next to a sidewalk and fence.