A man suspected of killing a Missouri police officer and injuring another over the weekend was taken into custody Monday following a standoff with authorities. 

Kenneth Lee Simpson, 35, was identified as the suspected gunman who shot and Hermann Police Department Detective Sergeant Mason Griffith outside a store Sunday night. 

A source told KMOV-TV one of the offers was shot in the head, and the other in the chest. Both were flown to a hospital. Griffith died at the hospital. The other officer, who has not been identified, was in stable condition. 

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On Monday, authorities went to a home where they set up a perimeter and tried to contact the suspect, police said. 

Simpson came out of the home around 2 p.m. and was taken into custody by the Missouri State Highway Patrol SWAT team. 

Simpson reportedly has a long criminal history, dating back to 2004 with several current pending cases. He has allegedly been on the run from authorities since April 2022.