Residents of the northern Sinai peninsula heard a large explosion Friday in the region near the border with Israel. The officials say the Israeli drone missile attack that killed five suspected Islamic militants and destroyed a rocket launcher was in cooperation with Egyptian authorities. The two officials spoke on condition of anonymity because they were not authorized to speak to the press. The Israeli military said they are looking into the report. Egypt's military and security forces are engaged in long battle against Islamic jihadists in the largely lawless peninsula. On Thursday, Israel briefly closed an airport near the border after Egyptian officials say they warned of possible militant rocket attacks. http://english.ahram.org.eg/News/78692.aspx