By Leah Greenblatt
Updated July 16, 2009 at 12:00 PM EDT

Actress Mischa Barton, 23, canceled a scheduled appearance at the New York premiere of her new film Homecoming tonight, one day after reportedly calling the Los Angeles Police Department with a health problem.

Police were called to Barton’s home at 3 p.m. Wednesday for a “medical issue,” People reports. The star’s rep, Craig Schneider, told EW via a statement: “Ms. Barton was safely transferred to medical treatment for which she remains hospitalized, as per the recommendation of her doctor.” Schnider told People that the LAPD officers were there simply to protect the star. “Police were involved due to Ms. Barton’s celebrity status,” he said, adding that the actress is now “okay and resting.”

Police would not confirm Access Hollywood‘s claim that the actress has been placed under involuntary psychiatric hold at an L.A. hospital.

According to the CW’s Paul McGuire, Barton’s upcoming drama The Beautiful Life, which begins production July 22 and premieres Sept. 16, will not be affected by the incident.