Clinic Joan Rivers visited under investigation, receiving death threats

 

NEW YORK –  The clinic where Joan Rivers underwent a throat procedure last week is under fire from the comedian's fans as well as the New York Dept. of Health.
A rep for the New York Dept. of Health told FOX411 that the Yorkville Endoscopy clinic Rivers’ was visiting when she went into cardiac arrest on Aug. 28 is under investigation.
“The state department of health is investigating the matter,” a rep told us. “It’s a full investigation of the matter… Since it’s an ongoing investigation I can’t comment on what we’re looking at.”
TMZ reports the clinic has hired additional security after receiving death threats from Rivers' fans.
"If Joan dies, so will you," one of the threats read according to TMZ. "I hope you people die, you killed an icon."
Rivers, 81, was rushed away from the clinic at 201 E. 93rd Street by emergency medical personally when she stopped breathing during a throat procedure. She was then on life support at Mount Sinai Hospital and
her daughter said she died on Thursday.
When contacted by FOX411 for comment, Yorkville Endoscopy repeatedly hung up the phone. Our emails to the clinic have not been returned.
The NYC Medical Examiner's office also told FOX411 they are investigating the cause and manner of Rivers' death.
“The death has been reported to us and the Medical Examiner’s Office is investigating," an official told us.
WATCH: Joan Rivers: 1933-2014 below: