Patty Duke, who won an Oscar as a teen for "The Miracle Worker" and maintained a long and successful career throughout her life, has died. She was 69.

Duke’s agent confirmed her death to the Associated Press saying she died early Tuesday morning of sepsis from a ruptured intestine.

Duke celebrated her 30th wedding anniversary two weeks ago and tweeted about the occasion. It was her last message to fans via her verified Twitter account.

The New York native had prominent film, television and stage roles. She built on her success in teenhood by playing identical cousins on a popular sitcom, "The Patty Duke Show."