A police officer in St. Peters, Missouri is expected to recover after he was shot during a traffic stop.
St. Peters is west of St. Louis.
The Highway Patrol issued a Blue Alert for a suspect who shot the officer in the leg on Thursday, then left the scene.
A Blue Alert is issued when an officer is seriously injured or killed and authorities need to find the suspect.
Police eventually caught up with the suspect in an SUV south of Troy.
The suspect fired shots at police.
Officers returned fire, killing the suspect.
