According to ET, comedienne Joan Rivers remains in stable but critical condition after things went wrong during routine throat surgery.

The 81-year-old was at a medical clinic for a simple endoscopic procedure, which TMZ reported as related to an issue with her vocal cords.

It was during the early stages of the procedure that Rivers suddenly stopped breathing.

The Fashion Police host was then immediately rushed to New York City’s Mount Sinai Hospital.

She was reportedly placed in a medically-induced coma.

It is an unfortunate situation that has many fans, non-famous and famous alike, worried about her condition and wishing her a swift recovery.

Dear @Joan_Rivers, Got your flowers. I DO owe you another dinner. Get well my friend. pic.twitter.com/PaEEFRN1sj

— Kathy Griffin (@kathygriffin) August 28, 2014

So glad to hear Joan Rivers' condition has been upgraded to stable after she was hospitalized this morning: http://t.co/kf4cuUPT6a

— E! Online (@eonline) August 28, 2014

To my dear friend @Joan_Rivers – I have known you forever. I wish you nothing but the best in this struggling time. Go get 'em girl.

— Larry King (@kingsthings) August 28, 2014

River’s daughter Melissa arrived in New York Thursday evening on a flight from Los Angeles to be with her mother.

Melissa Rivers said in a statement to ET:

“[My mother] is resting comfortably and is with our family. We ask that you continue to keep her in your thoughts and prayers.”

A spokesman for Mount Sinai hospital also released a statement confirming that she is being treated at the location and reaffirming her family’s gratefulness for the outpouring of support.

“We will provide an update on her condition as it becomes available,” said the spokesman.

The @bt_vancouver crew is sending positive vibes to @Joan_Rivers tonight! Get better! @riazmeghji @michelmcdermott pic.twitter.com/AQ7NiNdG6r

— Kyle Donaldson (@donaldsonkyle) August 29, 2014

Joan Rivers was expected to begin her new web series In Bed With Joan.

Ahead of her health making a turn for the worse, she was reported to have begun promoting a new book called Diary of a Mad Diva.

She had also recently filmed a special edition of Fashion Police covering the red carpet looks for the Prime-time Emmy Awards.

Rivers found herself at the center of quite a bit of controversy in recent months.

She famously walked off the air during a CNN interview when the host criticized her about her “mean” opinions and tendency to cross the line on sensitive issues and a unique figure in pop culture.

While Joan Rivers remains a controversial and divisive figure, she is undeniably one of the most outspoken women in the entertainment business.