TRACY (CBS13) – The Tracy Police Department is looking for the drivers of two cars who may have witnessed an unsolved murder at the end of September.

23-year-old Nikolis Martinez was shot and killed on September 21 on West Carlton Way. Investigators believe a white GMC SUV and A gold or silver SUV were in the area at the time of the murder. Detectives want to speak with the occupants of the cars about what they may have witnessed.

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Credit: Tracy PD

Credit: Tracy PD

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The suspect drove a gray 2000s Chrysler 300 4-door sedan.

Credit: Tracy PD

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If you recognize the cars, you’re asked to call Detective Jesser at 209-831-6640 or the PD at 209-831-6550.