UPDATE #2: Young has told People magazine that she'd like an apology from the folks at the Governer's Ball, where she was arrested: "They need to make a public apology on behalf of their security guard," she said, adding that footage of the incident will exonerate her.
UPDATE: TMZ is reporting that Sean Young was arrested due to an altercation she had with a guard who denied her entrance to a party: "When security asked her to leave again, a guard may have placed his hand on her arm when Sean allegedly slapped him. She was then placed under citizen's arrest for battery."
ET Online reports that Young was released from a Hollywood police station at 2:55 Monday morning after posting $20,000 bail.
PREVIOUSLY FROM AP:
LOS ANGELES -- Actress Sean Young was arrested after a scuffle with a security guard at the official post-Oscars party, police said Monday.
Young, 52, was placed under citizen's arrest at the Governor's Ball at 9:25 p.m. Sunday after the dispute, police Cmdr. Andrew Smith said.
"She was trying to get into the party and couldn't get in," he said.
Young, who has starred in "Blade Runner" and "Stripes," was booked at the Hollywood police station for investigation of misdemeanor battery. She posted $20,000 bail and was released early Monday.
The actress was taken into custody quickly, said Tom Januszewski, an Associated Press business executive who witnessed the incident. He said he saw a guard subdue Young by placing his forearm on her neck and head while other guards placed her in handcuffs and led her away.
"It happened incredibly fast," he said, adding that while the guards were forceful with Young, they didn't use unnecessary force. "I thought it was incredibly well-handled."
Young was wearing a ball gown but didn't speak as she was being led away, Januszewski said.
The actress tried to crash the Vanity Fair Oscar party in 2006. She entered rehabilitation for alcohol abuse in 2008 after she was removed from the Directors Guild of America awards.
A voicemail message left early Monday for Academy of Motion Picture Arts and Sciences publicist Tarrah Lee Curtis wasn't immediately returned. A phone message left for Young's agent, David Shapira, also was not immediately returned.