UPDATE: Chelsea O'Donnell has been found. No details were given at this time.

Rosie O'Donnell has posted on social media and her website that her daughter Chelsea is missing.

Chelsea, and her therapy dog, a 9 pound black terrier named Bear, haven't been seen since Tuesday, August 11.

From Rosie's official website:

Rosie O’Donnell’s 17 year old daughter, Chelsea O’Donnell was reported missing. Nyack, New York police authorities have been looking for her in the Rockland County area since Sunday, August 16. She was last seen Tuesday, August 11. She was wearing a black sweatshirt hoodie, dark ripped blue jeans, women’s grey converse sneakers and a black backpack. Chelsea has a large tattoo on her right side of a dream catcher with the word ‘Breathe.’ She left home with her 6 month old therapy dog named Bear. The dog is a 9 lbs brown and black terrier. Chelsea stopped taking her medicine and is in need of medical attention. Any information please contact authorities at 845-358-0206 or 911.