CHELSEA, Mass. (AP) — Prosecutors and police are asking for help identifying the attacker who fatally injured a woman in Chelsea.

The Suffolk district attorney's office said Tuesday the woman was a Revere resident in her 40s. Her name wasn't immediately released.

Chelsea police found the woman just after 1 a.m. when they got a call that a woman was lying in the street at Broadway and Congress Avenue.

The district attorney's office said witnesses told police she had been walking from the direction of nearby Everett Avenue when she fell to the ground.

She was taken to Massachusetts General Hospital, where she later died.

Her death is being investigated as a homicide.