She apparently stopped breathing during a medical procedure at another location on the Upper East Side.
The New York City Fire Department transported a woman matching Rivers’ description to Mt. Sinai Hospital after receiving a call that the woman was in cardiac arrest at Yorkville Endoscopy, a source said.
According to TMZ, the 81-year-old comedian was undergoing throat surgery.
In addition to the E! TV show, Rivers continues to do stand-up comedy. According to Ticketmaster, she had seven shows planned across the U.S. for November.
Rivers was scheduled to appear at the Count Basie Theatre in Red Bank NJ at 8 p.m. on Friday.
Joan Rivers Hospitalized
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