Another Anonymous post flagging Operation You've Been Owned, which aims to publicise a US court case that might make it illegal to sell copyrighted goods.
France's ambassador to Nigeria, Jacques Champagne de Labriolle, told the BBC the artefacts' return was part of a global attempt to fight the "illegal trafficking of cultural goods".
Given the abysmal performance of some allies (notably Germany) in preventing the illegal transfers of sensitive technologies, such an arrangement invites a serious hemorrhage of strategic goods and know-how.