Joan Rivers dead at 81

Comedy legend Joan Rivers has died at the age of 81. She went into cardiac arrest on Aug. 28, and had been on life support at New York's Mount Sinai Hospital.
"It is with great sadness that I announce the death of my mother, Joan Rivers. She passed peacefully at 1:17 p.m. surrounded by family and close friends," her daughter Melissa Rivers said. "My son and I would like to thank the doctors, nurses, and staff of Mount Sinai Hospital for the amazing care they provided for my mother."
E!, where she headed up the snarky talk show "Fashion Police," released a statement of condolence.
“She’s been a much beloved member of the E! family for over 20 years and the world is less funny without her in it," they said. "Today our hearts are heavy knowing Joan will not be bounding through the doors.”
The NYC Medical Examiner's Office told FOX411 it will be investigating the cause and manner of Rivers' death. “The death has been reported to us and the Medical Examiner’s Office is investigating," a rep said.