Code in carrier pigeon note from WWII a mystery

People from around the world are coming forward to try to crack a World War Two message found on the leg of a dead pigeon — but it remains a mystery.

The code, hand-written on a small sheet of paper headed “Pigeon Service”, was found in a small red canister attached to the bird’s skeleton up a chimney at a house in Bletchingley, Surrey.

Experts from UK intelligence agency GCHQ have said the message, which has 27 five-letter code groups, is impossible to crack without its codebook.