An explosion has hit an Egyptian gas pipeline in Sinai peninsula, following a spate of attacks on security checkpoints in recent days, state television and witnesses said. It was not immediately clear who was responsible for the pipeline blast on Saturday or if the recent attacks were in reaction to the Egyptian army's overthrow of Islamist President Mohamed Mursi on Wednesday. The fire caused by the explosion was under control by early Sunday morning, state media reported. The pipeline, which supplies gas to Jordan, has been attacked more than 10 times since Egypt's former president, Hosni Mubarak, was ousted in 2011 during the Arab Spring uprisings.