SAN FRANCISCO (AP) — A woman died after two large dogs attacked her outside in her Pacific Heights apartment building Friday afternoon.

Two bull mastiffs bolted from a neighbor's apartment at about 4 p.m. as the woman, in her early 30s, was coming home, police spokesman Sherman Ackerson said.

One dog mauled her as the other tore at her clothes as the caretaker tried in vain to pull them off.

She died after two hours of surgery on her neck at 8:55 p.m., according to a nursing supervisor at San Francisco General Hospital.

The attack lasted five to 10 minutes, Ackerson said. The woman was unconscious and bleeding badly with severe neck injuries by the time help arrived.

She was taken to the San Francisco General Hospital in full cardiac arrest, where she immediately underwent surgery, hospital spokeswoman Gloria Rodriguez said.