A 59-year-old woman was fatally attacked by a man wielding a machete in the Mott Haven section of the Bronx on Sunday afternoon, the police said.

“It was a very gruesome crime scene,” a police official said. “Very. Incredibly. Very bad,” he added. The police identified the victim as Carmen Torres-Gonzalez.

The police, responding to a 911 call, arrived at 383 East 141st Street just after 4 p.m.

“She had lacerations to her neck, cheek, shoulder,” the police official said of the victim. “She had a partially severed left hand and a completely severed right hand.”

The police said that the man, who was in his 20s, had confronted the woman in the building where they both lived, in what appeared to be an unprovoked attack.