A blast hit an Egyptian pipeline that transports gas to Israel and Jordan early Tuesday, dpa reported.
Unknown men attacked the pipeline in the village of Al Meedan in the city of Al Arish in Egypt's northern Sinai Peninsula, witnesses said.
Fire trucks and ambulances rushed to the scene as flames and a column of smoke rose from the site, the witnesses added. No casualties were immediately reported.
It was the sixth time an explosion has hit the pipeline since a popular uprising forced former president Hosny Mubarak to step down in February.
Gas exports to Israel are unpopular in Egypt, which has been sending them since 2008 under a 15-year deal with preferential terms.
Egyptian officials have been trying to amend the deal since Mubarak's ouster.