I thought every piece in the British Museum was either "missing, stolen or damaged"?

Don'tcha think?

This is the best summary I could come up with:

Security has already been tightened, he added, and the museum is "working alongside outside experts to complete a definitive account of what is missing, damaged and stolen".

Former trustee Sir Nigel Boardman and British Transport Police Chief Constable Lucy D'Orsi will be leading an independent review and will make recommendations on future security arrangements.

Sir Nigel said: "The British Museum has been the victim of theft and we are absolutely determined to use our review in order to get to the bottom of what happened and ensure lessons are learnt.

Former chancellor George Osborne, who chairs the British Museum, said the trustees were "extremely concerned when we learned earlier this year that items of the collection had been stolen".

He added: "We called in the police, imposed emergency measures to increase security, set up an independent review into what happened and lessons to learn, and used all the disciplinary powers available to us to deal with the individual we believe to be responsible.

"Our priority is now threefold: first, to recover the stolen items; second, to find out what, if anything, could have been done to stop this; and third, to do whatever it takes, with investment in security and collection records, to make sure this doesn't happen again."

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