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O’ FALLON, MO – A 21-year- old man who refused to come out of a house in O’Fallon Missouri was taken into custody Thursday morning.

Just before 4:20 a.m. O’ Fallon police responded to a service call for a man firing shots from inside of a home located in the 100 block Aviston Court. When police arrived the man, who has not yet identified, barricaded himself with a gun inside of the home, according to officials.

A woman, who authorities identify as the mother of the barricaded man and a dog were able to safely get out of the home. Police used a loudspeaker to communicate and attempted to make telephone contact with the man before taking him into custody.

The St. Charles County Regional SWAT and Emergency Medical Services were also called to the scene.

Police are working with the Wentzville School District to assist with bus pickup.

The investigation is ongoing.

SWAT is now leaving the scene, however, investigators are still here taking pictures. @FOX2now pic.twitter.com/Ci8ff0Tpfa — Derrion L. Henderson (@DerrionLH) August 29, 2019

OFALLON MO BARRICADED SUBJECT https://t.co/DMc9RKx0qn — FOX 2 Rogue Runner (@RogueRunnerSTL) August 29, 2019

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