POTW: Lil Wayne, Jennifer Lopez, Robin Thicke, Katy Perry
Forget Sarah Marshall! Katy Perry isn't having a problem keeping fiancé Russell Brand's attention (and everyone else's) at the 2010 Vanity Fair Oscar Party in West Hollywood, Mar. 7.

Russell Brand has been arrested following an altercation with a photographer at Los Angeles Airport, where the 35-year-old British actor/comedian and his fiancee, pop star Katy Perry, were preparing to board a flight to Las Vegas.

Brand was taken into custody Friday at the airport for a misdemeanor charge of simple battery, according to police.

Brand was booked at LAPD's Pacific Division and initially held on $20,000 bail. He was released later Friday on his own recognizance, Los Angeles Airport Police spokeswoman Belinda Nettles said.

The victim, a paparazzo who was not identified, placed Brand under citizen's arrest, Nettles said.

The alleged attack involving the two-time MTV Video Music Awards host and "Get Him to the Greek" star was first reported by TMZ, which posted video of the altercation that occurred as Brand and Perry were surrounded by paparazzi as they entered the terminal that houses Delta.

Perry commented on Twitter about the incident, writing, "If you cross the line & try an put a lens up my dress, my fiancé will do his job & protect me. #standbyyourman #don'tfuckwiththeBrands."

Brand's publicists did not immediately return messages seeking comment.

Back in England, Brand has built a reputation for his drug-addled past and hedonistic tendencies, and he's sought treatment for drug addiction and sex addiction. He detailed his storied history in his 2007 memoir "My Booky Wook." Brand is next set to star as Trinculo in a version of "The Tempest" and the title character in a remake of "Arthur."

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(Additional reporting by Monica Herrera, Billboard.com)