Militants blew up a pipeline in Sinai late Tuesday that transports gas to Jordan, security officials said, in the fourth such attack this year in the restive peninsula. Militants planted explosives under the pipeline south of the city of Al-Arish in an area called Lehfen, they said. The explosion sent thick flames of fire shooting into the sky, security officials said, adding that fire engines and ambulances had been rushed to the site. On February 11, Militants planted a bomb under a pipeline that transported gas to an industrial area of the restive Sinai.