New York: Joan Rivers’ daughter, Melissa, filed a malpractice lawsuit on Monday against the New York medical clinic that treated her mother days before her death, saying doctors there posed for selfies with their sedated celebrity patient even as her vital signs were plunging.

Rivers, who was 81, suffered a loss of oxygen to her brain on 28 August while physicians at the Yorkville Endoscopy centre in Manhattan were performing procedures to examine her throat and vocal cords, and she died a week later at a New York hospital.