A blast Monday in Egypt's Sinai Peninsula hit a pipeline that transports gas to Israel and Jordan, news reports said.
The explosion occurred at a pumping station at Nagah in the northern Sinai Peninsula, the reports said, citing Egyptian security officials. No casualties were immediately reported.
If confirmed as an attack on the pipeline, it would be the third since protests ousted president Hosny Mubarak in February. The earlier blasts in February and April were blamed on saboteurs and a "terrorist operation", dpa reported.
The previous blasts cut gas supplies to Israel and Jordan. After the latest explosion, gas deliveries were resumed June 10.
The exports are unpopular in Egypt, which has been sending gas to Israel since 2008 under a 15-year deal and preferential terms.
Egyptian officials have been trying to amend the deals with both countries since Mubarak's ouster.