Joan Rivers stops breathing during surgery, said to be in critical condition

 
Here's what TMZ reports,

Joan Rivers was rushed to a hospital in New York City moments ago ... after she stopped breathing during a surgery on her throat .

We're told Rivers was undergoing the throat procedure in a clinic (specifically on her vocal chords) ... when she stopped breathing during the surgery.

Sources say 81-year-old Rivers was rushed to Mount Sinai hospital in New York.
We're told her daughter Melissa is on her way to New York. 









Like TMZ said, Story still developing.