Mischa Barton was taken to a hospital in Los Angeles, E! News can confirm, after local authorities responded to a disturbance call.
"She was making incoherent statements that made absolutely no sense and she was transported to the hospital," a West Hollywood Sheriff's deputy told E!
According to TMZ, the actress, who is best known for her role as Marissa Cooper on the hit show The O.C., appeared to be behaving in a bizarre fashion in the backyard of her West Hollywood home when authorities responded to the call.
The site also reports the 31-year-old was voluntarily transported to a nearby hospital for a mental evaluation. Barton's rep did not return request for comment.
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Back in 2013, in an interview with People magazine, the actress opened up about her road to recovery following a "full-on breakdown" in 2009.
"It was terrifying," she added. "Straight out of 'Girl, Interrupted.' Story of my life."
Barton also admitted she "was living a jet-set lifestyle" which only hurt her in the end. "There were a lot of enablers around, people to fly you around and make it all possible."
The star explained that she felt that she was under "enormous pressure" during her early years in front of the camera which ultimately lead her to feel as though her life was spiraling out of control.
Barton opened up about how her parents attempted to stage an intervention prior to her blacking out "under the influence of a sedative."
Shortly thereafter, she was admitted into a psychiatric ward after she threatened to take her own life. Two years prior, Barton was arrested for a DUI and possessing marijuana.