International

While the tomb is in Syria, it is considered a Turkish enclave.

In recent months, reports had emerged that ISIS surrounded the tomb of the grandfather of the founder of the Ottoman Empire.

As part of the Treaty of Ankara in 1921, which ended the Franco-Turkish War, Turkey was allowed to keep the tomb despite its location in Syria, place guards at it and raise a Turkish flag over it.

"Legacy heirlooms of high moral value at the Suleyman Shah Respect Outpost, which is a part of Turkish territory by international agreements, has temporarily moved to the Suriye Esmesi village again within Syrian territory due to the security issues and military risks in Syria while reserving all rights," the Turkish military's website says.

One Turkish soldier was killed in an accident, a Turkish government official said.