Nine people were killed and one was critically injured in an assisted living home fire in Fall River, Massachusetts, authorities said. Fall River Fire Chief Jeffrey Bacon called the fire at Gabriel House "an unfathomable tragedy.

Local and state fire investigators are working to identify the origin and cause of the 5-alarm at Gabriel House on Oliver Street, officials said.

Flames roared through an assisted-living facility in Massachusetts, killing nine people and trapping residents inside, including some who leaned out of windows and screamed for help.