DAKAR, Senegal (AP) — Muslim extremists continued destroying the heritage of the ancient Malian city of Timbuktu on Monday, razing tombs and attacking the gate of a 600-year-old mosque, despite growing international outcry.

The International Criminal Court has described the destruction of the city’s patrimony as a possible war crime, while UNESCO’s committee on world heritage was holding a special session this week to address the pillaging of the site, one of the few cultural sites in sub-Saharan Africa that is listed by the agency.