Comedienne Joan Rivers is reportedly on life support, according to a new report. The 81-year-old was rushed to Mount Sinai Hospital in New York City after she stopped breathing during a routine throat procedure on Thursday, Aug. 28.

A source close to the family told TMZ that Rivers has been placed on life support and she is completely reliant on the machines. The family will have to decide within the next couple of days whether they want to keep Rivers hooked to the machines.

The source said that the family is optimistic that if they do decide to turn the machines off, Rivers' medical condition could improve. On Thursday, the "Fashion Police" cohost was undergoing surgery on her vocal chords at a New York City clinic when she went into cardiac and respiratory arrest.

TMZ reports that a 911 call was placed at the clinic around 9:40 a.m. and Rivers was rushed to Mount Sinai Hospital where doctors placed her in a medically induced coma. According to the New York Daily News, doctors are not sure how long the comedienne went without oxygen.

Thursday afternoon, Rivers' daughter Melissa released a statement updating the public on her mother's condition.

"She is resting comfortably and is with our family," the statement read (via US Weekly). "We ask that you keep her in your thoughts and prayers."

On Friday (Aug. 29) a second statement was released and said Rivers' condition remained serious.

"My mother would be so touched by the tributes and prayers that we have received from around the world. Her condition remains serious but she is receiving the best treatment and care possible. We ask that you continue to keep her in your thoughts as we pray for her recovery."