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The clinic where Joan Rivers was undergoing a procedure prior to her hospitalization is now under investigation.

The New York State Health Department told ABC News that it has opened a “full investigation” into Yorkville Endoscopy Center in New York City to determine whether the clinic would be cited for violations.

Investigators have already visited the clinic.

There are certain types of incidents that must be reported to the state and the events surrounding Rivers’ emergency was one of those, though health officials declined to elaborate what specifically triggered the investigation.

Yorkville Endoscopy was established in 2013 and was inspected by the State Health Department prior to opening. To date, there have been no complaints or violations regarding the facility.

a woman who answered the phone at the clinic told ABC News the clinic had no comment.

Rivers, 81, was taken to Mount Sinai Hospital in Manhattan on Aug. 28 after an emergency call reported she was in cardiac arrest at Yorkville Endoscopy, a source told ABC News.

Rivers has been unconscious and sedated since her arrival at Mount Sinai.

Last week, her daughter, Melissa Rivers, confirmed that the comedian was on life support.

“My mother has been moved out of intensive care and into a private room where she is being kept comfortable,” Melissa Rivers said Wednesday in a statement. “Thank you for your continued support.”

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