IRWINDALE (CBSLA.com) — Deputies Monday will be interviewing possible witnesses who may have information related to the murder of 48-year-old man in the city of Irwindale.

From 4 a.m. to 5:30 a.m., deputies will conduct a vehicle canvass operation to contact drivers and passengers in an effort to obtain information related to the death of Martin Diaz, according to the Los Angeles County Sheriff’s Department.

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Just after 5:30 a.m. on Nov. 25, officers were sent to the 15900 block of Foothill Boulevard for report of a person down call.

Upon their arrival, authorities located a Hispanic man, who was later identified as Diaz, inside of a compact vehicle suffering from a gunshot wound.

Police said Diaz appeared to be driving east, between the hours of 4:30 a.m and 5 a.m., on Foothill Boulevard when he was shot.

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Los Angeles County Fire Department paramedics responded and pronounced Diaz dead at the scene.

Diaz is survived by his brother, uncle, and parents. He worked for a sprinkler company in Azusa.

The investigation is ongoing as no suspect information is available at this time.

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Anyone with information about this incident has been urged to contact the Los Angeles County Sheriff’s Department’s Homicide Bureau at (323) 890-5500.