Joan Rivers was rushed to a hospital in New York Thursday after she stopped breathing during surgery. The longtime comedian and “Fashion Police” television host was reportedly having a vocal cord operation at a New York clinic when doctors noticed she was no longer breathing. Rivers, 81, is now listed in critical condition and receiving treatment at Mount Sinai Hospital in Manhattan, TMZ reported.

At one point, River’s heart reportedly stopped beating. It is unclear if doctors were able to restart her heart. A 911 call placed by doctors at around 9:30 a.m. this morning stated that Rivers appeared to be in either “cardiac or respiratory arrest.” Her daughter and fellow TV star Melissa Rivers, 46, is said to have "dropped everything" to be by her side and is en route to New York.