Nine people have died after a Massachusetts assisted living facility caught fire Sunday night. The death toll was revised after an error from the district attorney’s office on Friday. Elderly residents rushed to their windows to scream and beg for help as smoke filled the hallways.

After spending days in critical condition, Brenda Cooper, 66, succumbed to injuries she sustained on July 16, officials said.

All 273 assisted living facilities in Massachusetts must send letters to all residents and families detailing fire safety protocols, evacuation procedures and key points of contact, the state announced Friday.

More than 75 percent of Gabriel House residents are enrolled in Medicaid, state officials have said, and it charges significantly less than a typical assisted living facility does for private-paying patients.