terrorists attacked the jumbo jet killing everyone on board. an isis group claims responsibility for shooting down the plane. the plane took off from a popular site in sharm el-sheikh. the black boxes have both been found and are being analyzed as we speak. we're learning about an incident involving the plane's tail which could be related to the sudden malfunction. we begin with arwa damon "outfront" tonight in cairo. the flight crew did not send a distress call. what are officials saying tonight about the possibility of terrorism? >> reporter: well, at this stage, erin, all officials are pretty much ruling out the idea that the plane was shot down.