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.

A chainsaw-wielding man was shot and killed by police at a senior living facility near Chicago Sunday. Police said it started after they got a call about a shirtless man trying to cut down a tree with a chainsaw at the River Glen of St. Charles senior living center, according to ABC 7 Chicago.

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 wielding a chainsaw inside a senior-living facility in St. Charles, Illinois, was shot and killed by police early Sunday, state and local law enforcement said. "Just before police arrival, witnesses advised the subject had now gained entry to the lobby of the building and began confronting residents with the chainsaw,

A man who Illinois authorities said threatened senior-living facility residents and staff with a chainsaw on Sunday was shot to death by police.

A shirtless man was reportedly attempting to cut down a tree outside around 8:45 a.m. of the building before he then entered the senior living facility, police said.

St. Charles police were initially called for a welfare check after witnesses reported a shirtless man, later determined to be Escalera, holding a chainsaw and attempting to cut do

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

Police in St. Charles, Illinois, said Daniel H. Escalera was shot and killed by officers after he attacked residents of an assisted living facility, and then officers. Tara Molina reports.