UPDATE; Joan's daughter, Melissa released at statement:

"I want to thank everyone for the overwhelming love and support for my mother," Melissa Rivers said in a statement. "She is resting comfortably and is with our family. We ask that you continue to keep her in your thoughts and prayers."

A statement released from the hospital:

"This morning, Joan Rivers was taken to The Mount Sinai Hospital in New York, where she is being attended to. Her family wants to thank everybody for their outpouring of love and support. We will provide an update on her condition as it becomes available."

TMZ reported that Joan Rivers was is in critical condition after she stopped breathing during throat surgery on Thursday. 

Joan was getting a procedure done on her vocals cords when she stopped breathing and, at one point, her heart stopped. 

A 911 call was placed from the clinic around 930am and said that they had a patient who was either in 'cardiac or respiratory arrest.' 

She is 81 years old and is currently in critical condition in Mount Sinai Hospital in New York. 

Photo: Jeff Schear / 2014 Getty Images