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O’FALLON, Mo. – A man is dead after a standoff with police in O’Fallon, Missouri.

According to reports, officers responded to a call about a domestic assault and mental health crisis Saturday afternoon. They shared that a 32-year-old got into an argument with his parents, fired shots, then barricaded himself in their home after his parents left.

This happened on Longfellow Circle – in an O’Fallon subdivision. Police explained that the man walked out of the home and got into a shootout with officers, who then shot and killed the man.

“The handgun did get discharged prior to officers arriving,” O’Fallon Police Department Lt. Tom Wilkinson detailed. “So there was a heightened sense of security for the officers in this neighborhood. The officers were able to establish contact and did have some dialogue with the individual, but the individual ultimately came out of the residence and exchanged gunfire with officers on the scene.”

No one else was injured. The St. Charles Critical Incident Response Team is investigating. FOX 2 will update this story with more information as it becomes available.