HOUSTON (AP) — A traffic stop turned into a fatal shooting on Christmas Eve when a gunman killed a police officer and bystander in the parking lot of a Houston body shop, police said.

The confrontation followed a chase that began shortly before 9 a.m. Monday when the suspect sped off in his car rather than pull over as an officer had requested, Houston police spokesman John Cannon said. As the suspect fled, he sideswiped a white truck, which also took off after him, he said.