Joan Rivers dead: Health Dept. launches investigation into clinic Yorkville Endoscopy

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UPPER EAST SIDE (PIX11) - The New York State Health Department is investigating Yorkville Endoscopy, the clinic that where the late Joan Rivers went into cardiac arrest during a surgical procedure.

A spokesman would not discuss details, but did confirm that the health department is investigating.

The Upper East Side clinic is described on its website as being "dedicated to providing high-quality, cost-effective, efficient, and comprehensive outpatient healthcare for adults."

Rivers, 81, was apparently undergoing a procedure to repair her vocal chords when she stopped breathing and was rushed to Manhattan's Mount Sinai Hospital.  Rivers died on Thursday, her daughter announced.

NEW YORK, NY - JANUARY 31:  Joan Rivers attends SiriusXM's "Howard Stern Birthday Bash" at Hammerstein Ballroom on January 31, 2014 in New York City.  (Photo by Rob Kim/Getty Images)

NEW YORK, NY - JANUARY 31: Joan Rivers attends SiriusXM's "Howard Stern Birthday Bash" at Hammerstein Ballroom on January 31, 2014 in New York City. (Photo by Rob Kim/Getty Images)