http://edition.cnn.com/2015/11/03/afric … index.html
(CNN)A midair heat flash from Metrojet Flight 9268 was detected by a U.S. military satellite before the plane crashed Saturday in Egypt's Sinai Peninsula, a U.S. official told CNN. Intelligence analysis has ruled out that the Russian commercial airplane was struck by a missile, but the new information suggests that there was a catastrophic in-flight event -- including possibly a bomb, though experts are considering other explanations, according to U.S. officials.
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The midair heat flash detected by the U.S. satellite over Sinai could suggest a number of scenarios, though U.S. officials say intelligence has ruled out a missile strike. Analysts say heat flashes could be tied to a range of possibilities, including a bomb blast, a malfunctioning engine exploding or a structural problem causing a fire on the plane.
http://www.nbcnews.com/storyline/russia … no-n456161
A senior defense official told NBC News late Monday that an American infrared satellite detected a heat flash at the same time and in the same vicinity over the Sinai where the Russian passenger plane crashed. According to the official, U.S. intelligence analysts believe it could have been some kind of explosion on the aircraft itself, either a fuel tank or a bomb, but that there's no indication that a surface-to-air missile brought the plane down. That same infrared satellite would have been able to track the heat trail of a missile from the ground. "The speculation that this plane was brought down by a missile is off the table," the official said. A second senior U.S. defense official also confirmed the surveillance satellite detected a "flash or explosion" in the air over the Sinai at the same time. According to the official, "the plane disintegrated at a very high altitude," when, as the infrared satellite indicates, "there was an explosion of some kind."