update 11:45 a.m.
Houston police spokesman John Cannon says the officer died at a Houston hospital and that a bystander also was killed in the exchange of gunfire Monday morning.
Cannon says the suspect is wounded and also in a hospital.
He says the officer who was killed tried to pull over a car but that the driver sped away and hit another car. After the accident, the officer approached and the suspect opened fire.
Cannon says the officer fired back and that the suspect took off on foot. Other police officers captured the suspect.
update 11:28 a.m.
Houston police spokesman John Cannon says the officer, from the southwest Houston enclave of Bellaire, died at a hospital less two hours after the mid-morming shooting Monday.
Another person, believed the suspect, also is wounded and hospitalized. The second person killed was a bystander who worked at an auto body shop where the vehicles were parked after the traffic accident.
Witnesses say the Bellaire officer got out of his patrol car and the driver of a car involved in the wreck and the driver pulled a gun, opened fire and ran off on foot. Other officers at the scene returned fire, wounded him and he was captured.
Police say the officer has been taken to Ben Taub Hospital in unknown condition.
Houston police spokesman John Cannon says the shooting call came in just before 9 a.m. but other details remain sketchy.