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Sad news for fans of Lisa Robin Kelly.
The former That '70s Show actress died Wednesday night, her agent Craig Wyckoff confirms to E! News. She was 43.
Prior to her untimely passing, Kelly—who has previously struggled with addiction—checked herself into a treatment facility, but ultimately lost her battle in the wake of her recovery efforts. She reportedly passed away in her sleep at a California rehab center.
"Unfortunately Lisa Robin Kelly passed away last evening," Wyckoff tells E! News. "Lisa had voluntarily checked herself into a treatment facility early 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."