A CIGARETTE case presented to the man who solved the mystery of Agatha Christie’s disappearance in North Yorkshire is to be sold at auction.

Bob Leeming, who was a saxophonist at a Harrogate hotel in 1926, received the engraved case after alerting Christie’s family that she had been at the hotel.

The world-renowned crime-writer had been missing for 11 days.

The silver case, which has an estimated value of £5,000 to £10,000, is to be sold at Sotherby’s in London, on July 10.