Actress Carrie Fisher, best known for playing Princess Leia in Star Wars, appears to have suffered a heart attack on a flight from London to Los Angeles. The emergency took place around 15 minutes before the plane landed, reports TMZ.

The plane’s crew asked whether there were any doctors on the plane and an EMT administered CPR before the plane landed just after noon pacific time. Paramedics rushed Carrie to a nearby hospital, where, according to the Los Angeles Times, she was in critical condition after suffering a “cardiac episode.”

Actress Anna Akana was on the flight and wrote about it on Twitter, noting that Fisher “stopped breathing on the flight home.” She added that Fisher "wasn't breathing for 10 minutes or so" but didn't go into much detail and wrote in a follow-up tweet that she is “NOT interested in talking.”

The Los Angeles Fire Department confirmed it responded to a call from the airport but didn’t release any other information. United Airlines also issued a statement saying that Flight 935 was met by medical personnel on the ground due to an “unresponsive” passenger, but it didn’t name the passenger.

Fisher recently published an autobiography titled the Princess Diarist and was on a book tour.

*This is a breaking news story and will be updated as more information becomes available.