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Medical examiner completes autopsy on Joan Rivers

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(CNN) – Authorities say an autopsy on comedian Joan Rivers has been completed but more information is needed, New York City medical examiner’s office spokeswoman Julie Bolcer said.

Rivers, 81, died in a New York hospital on Thursday afternoon, a week after suffering cardiac arrest during a medical procedure.

Rivers had been on life support at Mount Sinai hospital after she stopped breathing during a procedure at Yorkville Endoscopy clinic.

She was undergoing an apparently minor elective procedure when she suffered cardiac and respiratory arrest, according to the New York Fire Department.

At this point, the medical examiner’s office says the cause and manner of her death cannot be determined and are listed at inconclusive.

The outpatient clinic is now being investigated by the New York State Department of Health.

Authorities say they are trying to determine if there was any malpractice by the doctors and their staff.

Melissa Rivers and her son Cooper have spent the past week by Rivers’ hospital bedside, rushing there last Thursday when they learned of her illness.

“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,” her daughter said. “Cooper and I have found ourselves humbled by the outpouring of love, support, and prayers we have received from around the world. They have been heard and appreciated.’