Banksy Oscar artwork appears in LA

Graffiti artist Banksy's first film is up for an Oscar and it looks like he is already in Los Angeles ahead of the ceremony.

His movie, 'Exit Through the Gift Shop' is nominated in the Best Documentary feature category.

Since his arrival Stateside, a handful of pieces bearing his hallmarks and humour have appeared in the city.

One of them, a Mickey Mouse graffiti piece on a billboard on Hollywood's Sunset Strip has caused a bit of an uproar.

Workers for the billboard company took it down, which resulted in a fight with the owner of the property that rents out the space to the sign company.

Police were called and the workers were eventually allowed to leave with the stencil.

If the graffiti turns out to be a genuine Banksy, the urban art could be extremely valuable.