An initial autopsy of comedian Joan Rivers is inconclusive as to the case of death, the New York City Medical Examiner's office told the Daily News on Friday.
Rivers, 81, died Thursday a little more than a week after going into cardiac and respiratory arrest while having a procedure done on her vocal cords.
The "cause and manner" of Rivers' death requires additional studies, Julie Bolcer, spokeswoman for the medical examiner's office said to the Daily News. The comedian was reportedly taken off life support Thursday with family and friends at her bedside.
On Thursday, the state's health department reportedly announced plans to investigate Yorkville Endoscopy Center in New York, where Rivers had the procedure on Aug. 28.
Sources reportedly have told the Daily News that Rivers' family is considering a lawsuit because of the sudden nature of the comedian's death. Rivers is survived by daughter Melissa Rivers and grandson Cooper Endicott.
Her funeral is set for Sunday at a New York synagogue, though no details have been made public.
Ann Tatko-Peterson provides celebrity commentary for the Bay Area News Group. Follow her at twitter.com/atatkopeterson.