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 Police have arrested a man in the killing of a grocery store employee who was fatally shot in broad daylight in the parking lot of the Northern California supermarket where he worked.

The Napa County Sheriff’s Office said Monday 18-year-old Nathan Garza was killed Sunday at noon in the bustling parking lot of a Safeway store in American Canyon.

Officers apprehended 23-year-old Chris Young shortly after the shooting after he was seen jumping fences and running through backyards.

“A subsequent search of the vehicle located a .45 caliber handgun, the same caliber handgun used in the Safeway shooting,” the Sheriff’s Office said in a statement.

Young was arrested on suspicion of murder and has been booked into jail.

Detectives have not released a motive in the killing.

It was not immediately known if Young has an attorney who can speak on his behalf.