Tokyo: Japanese officials have said that a piece of graffiti found at a monorail station in Tokyo could be the work of British anonymous artist Banksy, the media reported on Friday. The drawing, sprayed on a door near the Hinode monorail station, bears resemblance to a famous Banksy painting Umbrella rat, which similarly pictures a rat parachuting with an umbrella, the BBC reported. It is not clear when the work was painted but the officials said they had known about it for a long time. They only realised it could be a Banksy after being contacted by residents. In a tweet, Tokyo Governor Yuriko Koike called the artwork a possible “gift to Tokyo”. Banksy produces pieces of work in public places which are often sold for high amounts.