TRT television said on Monday that the terrorists blew up a section of the pipeline running from Kirkuk, in northern Iraq to a Turkish Mediterranean port, late Sunday. The attack occurred in the southeastern province of Mardin.
Officials at Turkey's Energy Ministry and at the state pipeline company could not immediately be reached.
It was the second attack on the pipeline in just over two weeks. On July 21, an explosion and fire blamed on the terrorists also shut down oil flows for days.