The main oil export pipeline linking Iraq and Turkey, halted since the U.S.-led war on Baghdad, was hit by fire and explosions caused by a gas leak, U.S. authorities in Iraq said on Friday. Turkey said investigations were under way to establish whether sabotage was to blame for the blast in the Iraqi section of the pipeline in northern Iraq late on Thursday. The Turkish state-run news agency Anatolian said its correspondent in Iraq had reported another explosion on Friday afternoon around 30 miles from the previous blast. It gave no explanation for the latest explosion. Full Story