The cause of death for Lisa Robin Kelly, best known for playing Laurie Foreman on “That '70s Show,” has finally been released. The troubled actress died from a combination of drugs, according to the Los Angeles County coroner.

Kelly had battled drugs up until her death, and she was in a drug treatment facility when she died Aug. 15 at age 43.

"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,” her agent Craig Wyckoff said shortly after her death. “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."

The coroner’s report, obtained Friday by The Wrap, found that Kelly died from multiple drug intoxication. The report has not been publicly released because it has yet to be transcribed.

Kelly’s death was ruled accidental, and the report stated that the “That '70s Show” actress had ingested the drugs orally.

Kelly also battled legal problems in the year before her death. The actress was arrested on DUI charges in June 2012, her second such charge since she pleaded guilty to DUI in 2010, according to E!. She was also arrested on domestic violence charges in April 2012 and was handcuffed again in November 2012 on assault charges stemming from a fight with her husband, Joseph Gilliam.

The rehab facility where Kelly was staying reportedly did not want an autopsy performed on her body, according to the New York Daily News. The facility did not contact the coroner after Kelly’s death and a sheriff’s deputy who responded to the rehab facility said a doctor wanted to sign a death certificate without an autopsy, a source told the paper.

“The doctor said he thought it was an embolism, but that’s not how it works,” the source said. “Any rehab death has to go through the coroner.”

It was unclear why the rehab facility didn’t contact the coroner.

Kelly starred on "That '70s Show" for six seasons, from 1998-2003, as Laurie Foreman, sister to Eric Foreman (Topher Grace). She also appeared in a number of television series and movies. Her last film credit, according to her IMDb page, was the short "SUX2BME" in 2012, where she played the role of Angel.