Seven new pieces believed to be Banksy's work turned up in Paris, with nods to such topics as refugees, student protests and capitalism.
Mehdi Ghadyanloo painted a mural on a wall in Boston’s Dewey Square Park.
Criminologists used geographic profiling technique to track the street artist's identity.
The artwork appeared opposite the French Embassy in London on Saturday evening.
"Complaints from customers” cited as reason for pulling revolutionary artwork.