Banksy's graffiti in danger during London Olympics 2012

London - Banksy, the nonconformist street artist, has produced some spectacular new graffiti for the London Olympics. However, this latest work may be destroyed.

Despite warnings from the local police that any graffiti they find in London will be destroyed, Banksy, sometimes known as the "guerrilla artist", has unveiled his latest two masterpieces. One shows an Olympic javelin thrower, about to launch a missile ("Hackney Welcomes the Olympics"). The other shows a pole vaulter leaping over a fence on to a dirty mattress ("Going for Mould"). Besides the police threat, these works may also trouble the International Olympic Committee which maintains an iron fist over Olympic branding. Currently the locations are a secret, which is why they have so far escaped the whitewashing of other street artists' work in the lead up to the Games. Banksy has managed to keep his identity a secret, despite his international renown as a street artist, and he always uses his pseudonym. He was nominated for an Academy Award last year for his documentary "Exit Through the Gift Shop." The documentary tells the story of Thierry Guetta, a French immigrant in Los Angeles, and his obsession with street art. Guetta travels to London to try and find Banksy. Last week, the Guardian reported that several graffiti artists were arrested in London, as "part of a preemptive sweep" before the Games began. Artists have been forbidden to own spray paint, or to be within one mile of any Olympic venue in London, or elsewhere in the United Kingdom. However, Helen Bingham of Keep Britain Tidy told the BBC: "There's a difference between low-grade tagging and the work people like Banksy do … You have to look at it and know the difference - it's not a black and white thing."