Isidro Marquez Jr., 29

Isidro Marquez Jr., a 29-year-old Latino, died Saturday, Dec. 3, after he was shot in the 15800 block of Gale Avenue in Hacienda Heights, according to Los Angeles County coroner's records. 

Deputies were called to the 99 Cent Store shopping center on Gale Avenue, just east of South Hacienda Boulevard, around 8:09 a.m., regarding a person who was not breathing, said Los Angeles County Sheriff's Sgt. Troy Ewing. 

The caller, a U-Haul employee, told investigators he was parking a rental truck when he noticed a white, older model Honda Civic parked behind the businesses with its engine running and front passenger door open, Ewing said. 

When the caller checked the car, he discovered Marquez's body in the front seat and dialed 911. 

Marquez had a gunshot wound to the head, Ewing said. He was pronounced dead at the scene at 8:20 a.m.

No one reported hearing the shooting, Ewing said, but investigators believe Marquez was shot sometime during the night by someone who was in the car.

Marquez lived with his wife and three children in Hacienda Heights about a quarter of a mile from the strip mall where his body was found, Ewing said. 

His family didn't know where he had gone or who he was with, Ewing said. "He wasn't involved with gangs, so we don't think this is gang related," Ewing said, "but we don't know what the motive is."

Anyone with information is asked to call the Sheriff's Department Homicide Bureau at (323) 890-5500. Those wishing to remain anonymous should call Crime Stoppers at (800) 222-8477. 

Contact the Homicide Report. Follow @latimeshomicide on Twitter.