Updated at 11:40 a.m. ET
Actress Roseanne Barr says she was "Ambien tweeting" at 2 in the morning when she posted a racist tweet about Valerie Jarrett, a former senior adviser in the Obama White House, that caused ABC to cancel her TV show.
The reboot of Barr's eponymous TV show was canceled Tuesday after one season. ABC Entertainment's president announced the network was pulling the plug after Barr tweeted that Jarrett, who now serves on several corporate boards and is a senior fellow at the University of Chicago Law School, is the product of the "muslim brotherhood & planet of the apes."
Barr said shortly before 10:30 a.m. Tuesday: "I apologize. I am now leaving Twitter." She later sent dozens of tweets in which she apologized and offered up a number of reasons for her offensive comment.
"It was 2 in the morning and I was ambien tweeting — it was memorial day too — I went 2 far & do not want it defended," Barr said in a tweet Tuesday night.