A use-of-force investigation is underway in the fatal police shooting of a chainsaw-wielding man who threatened residents of a St. Charles assisted living center Sunday morning. Authorities have not yet released the suspect’s identity,

The man had gotten into the lobby of the building and started confronting residents with the chainsaw, according to investigators.

The man, who did not have authorization to be in the Illinois facility, confronted residents while armed with the chainsaw, police said.

A scary situation unfolded at a senior living facility when a man wielding a chainsaw attempted to attack residents and responding police over the weekend.

A man was shot and killed by police after he allegedly threatened residents and staff of a suburban assisted living facility with a chainsaw on Sunday.

When St. Charles police responded to a welfare check at an assisted living facility, officers confronted a man who was threatening residents with a chainsaw.

Police were called to the River Glen of St. Charles at 975 N. 5th Ave. about 8:45 a.m. Sunday where a shirtless man with a chainsaw was trying to cut down a tree. The man then entered the facility and tried to attack residents,

Police remain on-scene at an assisted living facility in suburban St. Charles on Sunday afternoon. According to authorities, police were dispatched to the River Glen facility on Sunday after a disturbance was reported.

The man had gotten into the lobby of the building and started confronting residents with the chainsaw, according to investigators.

The St. Charles Police Department says one of its officers shot and killed a man wielding a chainsaw in the lobby of an assisted living facility on Sunday.