The Islamic State group began bulldozing the ancient Assyrian city of Nimrud in Iraq on Thursday, the government said, in the jihadists’ latest attack on the country’s historical heritage.

An Iraqi antiquities official confirmed the news, saying the destruction began after noon prayers on Thursday and that trucks that may have been used to haul away artefacts had also been spotted at the site.

“Until now, we do not know to what extent it was destroyed,” the official said on condition of anonymity.

Nimrud, which was founded in the 13th century BC, lies on the Tigris around 30 kilometres (18 miles) southeast of Mosul, Iraq’s second city and the main hub of IS in the country.