Militants of the Islamic State of Iraq and Syria (ISIS) are advancing on Suleyman Shah tomb, a sovereign exclave of Turkey situated in Syria’s Aleppo that is being guarded by Turkish soldiers, Deputy Prime Minister Bulent Arinc said on Tuesday.

In April Turkey had sent soldiers to guard Suleyman Shah (1178-1227), the grandfather of the founder of the Ottoman Empire Osman I, Trend reports.

Turkey claims the sovereignty of the tomb, located 30km from the Turkish-Syrian border on the bank of River Euphrates, under a 1921 agreement signed with France, when Syrian was under the French rule.

Turkey has said it would defend the mausoleum.

Deputy Prime Minister Arinc said a parliamentary mandate for military action in Iraq and Syria will cover all possible threats.