© AP Photos/Dan Balilty, FileIn this Tuesday, Oct. 12, 2010 file photo, an Israeli soldier carries a drone during a large military exercise at the Shizafon Armored Corps Training Base in the Arava desert, in southern Israel. Israel has deployed reconnaissance drones on surveillance missions over its gas fields in the Mediterranean Sea due to security concerns, a defense official said Tuesday, Aug. 9, 2011
Israeli air force drones are patrolling the skies over the country's gas fields in the Mediterranean Sea due to security concerns, a defense official said Tuesday.
The deployment comes in the wake of new threats from Lebanon's militant Hezbollah group.
Israel and Lebanon have not agreed on a maritime border, and Israel's recent gas discoveries in the Mediterranean have created a new source of friction between the two countries, which have fought repeatedly.
The Israeli official would not specify the nature of the concerns or disclose when the unmanned aircraft began operating or how many were in the air. He spoke on condition of anonymity because he was not authorized to discuss the operation of the drones.