Fellow band-mate Nathan Sykes tweeted the picture of Jay blocking the door of the cupboard along with the caption: "Ok, so@JayTheWanted has locked seev in the cupboard ... He has been in there 20mins."
[See also: The Wanted's Max George calls off wedding]
Jay looks pretty pleased with himself, but we can only imagine the cries for help coming from inside the cupboard. Poor Siva.
The lads are currently on a tour of America. They made their debut appearance on US TV on The Elen Show, singing Glad You Came and seemed to go down very well indeed. We just hope America is ready for more naughty antics from the boys.