SAN ANTONIO (AP) — San Antonio police say a man and a woman have been found dead in a parked van with the engine still running.

Police on Tuesday identified the pair as 59-year-old Louis Cesar Alaniz and 53-year-old San Juanita Alaniz, both of San Antonio.

The bodies were discovered Monday night in the vehicle at an auto parts business parking lot. Police found no visible signs of trauma or violence. Autopsies have been ordered.

Police didn't immediately provide information on a person who flagged down an officer to report what appeared to be two people possibly asleep in the van. Both occupants were dead at the scene.