Harrison Ford Carrie Fisher
Harrison Ford and Carrie Fisher play Han Solo and Princess Leia in the “Star Wars” franchise, respectively. In this photo, the actors are pictured on June 9, 2005 in Hollywood, California. Getty Images/Kevin Winter

“Star Wars” actor Harrison Ford responded to Carrie Fisher’s hospitalization after his former co-star had a heart attack during a flight from London to Los Angeles Friday. Fisher remained in stable but critical condition.

“I’m shocked and saddened to hear the news about my dear friend,” Ford said in a statement to The Hollywood Reporter Saturday. “Our thoughts are with Carrie, her family and friends.”

What caused Fisher’s medical condition is unknown. She became unresponsive 15 minutes before her plane was slated to land at Los Angeles International Airport. When she was rushed to UCLA Medical Center by the Los Angeles Fire Department, her eyes were closed and she had an oxygen mask over her face, TMZ reported Friday. She was given CPR by an EMT who was on the flight before the plane landed.

“We have to wait and be patient,” the 60-year-old’s brother, Todd Fisher, told the Associated Press. “We have so little information ourselves.”

“She is in the intensive care unit, she is being well looked after,” Todd added to Entertainment Tonight Friday. “If everyone could just pray for her that would be good. The doctors are doing their thing and we don’t want to bug them. We are waiting by patiently.” He added: “We don’t know. We hope for the best. We certainly do not know her condition, that’s why she is in ICU. I’m sure everyone wants to speculate, but now is not the time for that.”

Though the LA Fire Department confirmed they picked someone up from LAX, they did not say it was Fisher.

“At 12:11 pm the Los Angeles Fire Department responded to a call from LAX for a patient that was in cardiac arrest,” Erik Scott, spokesman for the LA Fire Department, told USA Today Saturday. “Firefighter paramedics provided advanced life support and aggressively treated the patient whom was transported to a local hospital.”

Fisher was in the U.K. on a book tour and to film Season 3 of the sitcom “Catastrophe ,” which streams on Amazon, People Magazine reported Friday.

This is a developing story.

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