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Marcia Wallace, the voice behind 'The Simpsons' character Edna Krabappel, has died, her agent confirmed to OTRC.com on Oct. 26, 2013. She was 70.
The cause of her death was not released. While Wallace had battled breast cancer in the past, she had overcome the disease before she passed away, according to Deadline.
Though Wallace was likely best known as the voice of the jaded educator at Springfield Elementary in the long-running animated sitcom on FOX, Wallace also held the role of Carol Kester, the lovelorn and wise-cracking receptionist in the 1970s comedy show, "The Bob Newhart Show."
Wallace also made appearances on Candice Bergin's "Murphy Brown."
"Simpsons" executive producer Al Jean said in a statement Saturday to the Associated Press that her death is a terrible loss. He says Wallace's "irreplaceable character" would be retired from the show.
(Pictured above: Left - Actress Marcia Wallace poses on the press line at the TV Land 35th anniversary celebration of the Bob Newhart Show in Beverly Hills, Calif. on Wednesday, Sept. 5, 2007. Right - The 'Simpsons' character Edna Krabappel, appears in a photo from the animated show's Facebook page.)
(AP: Dan Steinberg / www.facebook.com/thesimpsons)