Camera Catches Thieves Abandoning Robbery Attempt Days Before Huge London Jewel Heist

Police say thieves behind one of Britain's biggest jewel heists abandoned an initial robbery attempt two days before the crime.

The Metropolitan Police on Saturday released security camera images of the suspects outside Graff Diamonds in London's Bond Street two days before the Aug. 6 robbery.

Detective Chief Inspector Pam Mace says police believe it was "more than just a practice run, and that they were planning on committing the robbery on Aug. 4."

Police say they do not know why the heist was postponed.

Two well-dressed men walked into the store Aug. 6 armed with handguns and stole dozens of rings, bracelets, necklaces and watches with a retail value of 40 million pounds, or $65 million.

A $1.65 million reward has been offered for their capture.