Actress Lisa Robin Kelly lost her life earlier this year in August (14th) while staying at a rehab facility in L.A.

The former 'That 70's Show' star's autopsy was released by the Los Angeles County Coroner on Friday (Jan 3rd).

Kelly, who was fighting a long battle with drug addiction, died in her sleep from "multiple drug intoxication".

She was only 43 years-old. At the time of her death, Kelly's publicist, Craig Wyckoff, explained that she had checked herself into the rehabilitation center several days prior to her death.

Wyckoff released a statement that said, "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."

He continued, "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."

TMZ reports that days before her death Kelly was hospitalised with a staggeringly high .34 blood level, which in some cases can lead to death.

The actress was most-well known for her role as Eric's unchasted older sister 'Lorie Forman' on 'That 70s Show' until she left in 2003 due to a drinking problem. She was replaced by Christina Moore during the show's sixth season on air.

Kelly starred alongside such actors as Mila Kunis, Ashton Kutcher, Wilmer Valderrama and Laura Prepon.

The full report as well as a toxicology report should be available to the public in the next few weeks.

lisa Robin Kelly
Kelly starring with Ashton Kutcher in 1999