Several works of art created by Oscar nominated street artist Banksy have been "stolen" off the L.A. walls they were painted on -- and now TMZ has learned, the hunt is on to get them back.
The people who run the user-generated news blog AllVoices.com ignited the effort with an open letter last week -- asking "the individuals responsible for the theft of this art to come forward and return the art to its rightful owners: the communities that received these unique and spontaneous gifts."
And as an added incentive ... AV is even offering to throw down cash "to purchase these stolen pieces and subsequently put them on public display so that the world can enjoy these creations."
Banksy couldn't be reached for comment. Because he's Banksy.