Former U.S. gymnastics doctor and convicted child molester Larry Nassar was reportedly stabbed multiple times Sunday night in a federal prison in Florida.

Sources told the Associated Press and ABC News that Nassar was in an altercation, and the extent of his injuries is unknown, but he is now in stable condition. Nassar, who treated some of the most well-known figures on the U.S. women’s Olympic gymnastic team, will spend the rest of his life in federal prison after more than 150 women and girls accused him of sexually abusing them over a period of 20 years.

The former doctor who worked at Michigan State University admitted to using his medical position to molest girls. A total of 156 victims spoke out against Nassar in court, including high-profile athletes such as McKayla Maroney, Aly Raisman, Gabby Douglas, Simone Biles, and Rachael Denhollander, who was the first to come forward detailing Nassar’s crimes in 2016.

This is a breaking story; refresh the page for updates.