The smashed articles appeared to come from an antiquities museum in Mosul, the northern city which was overrun by Islamic State last June, a former employee at the museum told Reuters. Militants attack ancient artefacts with sledgehammers. Credit:AP The militants shoved stone statues off their plinths, shattering them on the floor, and one man applied an electric drill to a large winged bull. The video showed a large exhibition room strewn with dismembered statues, and Islamic songs played in the background. Lamia al-Gailani, an Iraqi archaeologist and associate fellow at the London-based Institute of Archaeology, said the militants had wreaked untold damage. "It's not only Iraq's heritage: it's the whole world's," she said. "They are priceless, unique. It's unbelievable. I don't want to be Iraqi any more," she said, comparing the episode to the dynamiting of the Bamiyan Buddhas by the Afghan Taliban in 2001.

As well as Assyrian statues of winged bulls from the Mesopotamian cities of Nineveh and Nimrud, Ms Gailani said the Islamic State hardliners appeared to have destroyed statues from Hatra, a Hellenistic-Parthian city in northern Iraq dating back around 2000 years. A militant uses a power tool to destroy a winged-bull Assyrian protective deity at the Nineveh Museum in Mosul, Iraq. Credit:AP Eleanor Robson, professor of Ancient Near Eastern History at University College London, also said on Twitter that statues from Hatra and Nineveh had been wrecked, though she added that some objects shown in the video were modern replicas. The director of UNESCO's Iraq office, Axel Plathe, would not comment on the content of the video, saying it has yet to be verified. But he described the damage to Iraq's heritage since Islamic State overran Mosul last year as an attempt "to destroy the identity of an entire people". Men use sledgehammers on a toppled statue in a museum at a location said to be Mosul in this still image taken from an undated video. Credit:Reuters

Mr Plathe said UNESCO was working with Iraqi authorities and governments of neighbouring countries to crack down on the smuggling of artefacts from areas under Islamic State control, and had alerted auction houses to be on the lookout for stolen items. Islamic State espouses a fiercely purist school of Sunni Islam, deeming many other Muslims to be heretics. Its fighters have destroyed Shi'ite and Sufi religious sites and attacked churches and other shrines in the parts of Syria and Iraq under their control. "Muslims, these relics you see behind me are idols that were worshipped other than God in the past centuries," the unidentified man in the Islamic State video said. "What is known as Assyrians, Akkadians and others used to worship gods of rain, farming and war other than God and pay all sorts of tributes to them." Last week, Islamic State released another video showing a pile of books in flames.

An employee of the Mosul museum said he feared these books were manuscripts from the library of endowments, although the library itself was still in tact last week. Reuters, AAP