Nine people died Sunday night after an assisted living facility caught fire in Fall River, Massachusetts, officials said, with elderly people begging for help from first responders as smoke poured out of the building.

According to Fire Chief Jeffrey Bacon, the blaze started in a room on the second floor on the east side of the Gabriel House building, but details about the exact origin and cause are under investigation.

Authorities identified the victim as Brenda Cropper, 66. She had been hospitalized in critical condition since Sunday’s fire, which was the deadliest blaze in Massachusetts since 1984.