In the wake of Carrie Fisher's death on Tuesday, ET can confirm that she never regained consciousness after going into cardiac arrest on a plane last week.

TheStar Warsactress was hospitalized after going into cardiac arrest on a flight from London to Los Angeles on Friday, but apparently never fully recovered despite a Christmas Day tweet from Fisher's mother, Debbie Reynolds, claiming that "Carrie is in stable condition."

ET spoke with Fisher's brother, Todd Fisher, on Friday when her condition was unknown.

"She is in the intensive care unit, she is being well looked after," Todd said at the time. "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."

Fisher's death was confirmed on Tuesday by family spokesperson Simon Halls.

WATCH: Celebs React to Carrie Fisher's Death

"It is with a very deep sadness that Billie Lourd confirms that her beloved mother Carrie Fisher passed away at 8:55 this morning," Halls said in a statement to ET on behalf of Fisher's daughter, Billie Lourd. "She was loved by the world and she will be missed profoundly. Our entire family thanks you for your thoughts and prayers."

Fisher is survived by her mother and daughter.