ST. LOUIS, Missouri – KDSK reports a St. Louis County man killed his two sons before turning the gun on himself, police said Saturday.

Early Saturday evening, St. Louis County Police issued an Amber Alert for two area children believed to have been abducted by their father.

Christopher Cadenbach, 43, spent Saturday with his two children, Ethan Cadenbach, 5, and Owen Cadenbach, 4. He reportedly visited his estranged wife as well as his mother earlier in the afternoon, including a trip to a park.

Cadenbach’s mother contacted police after he began to act strangely. He talked about “not being taken alive”, including references to suicide by cop. Prior to an Amber Alert being issued around 6:30 p.m., a $100,000 domestic violence warrant was issued for his arrest.

Cadenbach was last seen with his children near 343 Rauhut Ave. in south St. Louis County near Lemay in a dark grey 2006 Ford Focus. The Amber Alert was issued shortly thereafter, the KDSK report said.

Just before 8 p.m., a Cliff Cave Park Ranger spotted the Ford Focus and approached Cadenbach with the assistance of other officers. As they got closer to Cadenbach, he shot and killed his children, before turning the gun on himself.

Police were still on scene at time of reporting, and they expect to continue the investigation late into the night.

As more information becomes available, this story will be updated.