Detectives said the shooting followed an argument over a parking spot. Deputies have released sketches of the man and woman they're looking for.
They believe the man shot and killed 29-year-old Daniel Villanueva. The woman was inside the man's truck during the shooting.
That truck is described as a silver two door, Chevy Silverado pickup with alloy wheels, tinted windows and California license plates.
Anyone with information is urged to call the sheriff's homicide bureau at 323-890-5500.