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

Police in St. Charles shot and killed a man they said was trying to attack officers and residents of a seniors' assisted living center with a chainsaw Sunday morning. On Sunday night, all was calm at the River Glen of St.

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,

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

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,

Daniel H. Escalera, 41, of Stockwell, Indiana, was pronounced dead at Northwestern Medicine Delnor Hospital following the incident, according to a joint statement from the Kane County State's Attorney's Office and St. Charles police. An autopsy was scheduled for Monday.

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.

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.