Lisa Robin Kelly Died: '70s Show' Actress Had Just Checked Into Rehab

Lisa Robin Kelly, who played Eric Forman’s older sister in the Fox hit comedy "That '70s Show," died in her sleep at a California rehab facility on Wednesday, TMZ is reporting. She was 43.

An agent for the troubled actress told TMZ that Kelly checked herself in on Monday because of an alcohol problem.

“She had been fighting demons for a while and finally lost her battle,” the agent said.

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Kelly, who recently filed for divorce from husband Robert Gilliam, had been arrested several times in the past three years.

In 2010, Kelly pleaded guilty to a charge of drunken driving, and in March 2012 she was arrested on suspicion of spousal abuse. Charges in the spousal abuse case were later dropped, however.

Last November, both she and her husband were arrested for assault, and on June 23, she was arrested again on suspicion of driving under the influence.

News of her death quickly spread across multiple social networking sites.

“Very sad,” tweeted @GlenSmithMail.

“Not surprised at all, but damn…” tweeted @allysiepiecie.

“RIP Lisa Robin Kelly. Was awesome on That 70’s Show. Unfortunately addiction got the best of her, Tweeted @Montyth

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Kelly’s manager, Craig Wycoff, released a statement to Fox News that read: “Unfortunately Lisa Robin Kelly passed away last evening. Lisa had voluntarily checked herself into a treatment facility earlier this week where she was battling the addiction problems that have plagued her these past few years. I spoke to her on Monday and she was hopeful and confident, looking forward to putting this part of her life behind her. Last night she lost the battle.”

Kelly’s death comes just weeks after actor Cory Monteith, who played Finn Hudson on the popular Fox show “Glee,” died of a heroin and alcohol overdose in a Vancouver, Canada, hotel room.