EgyptAir crash investigation focuses on 4-minute window of technical problems

Investigators scouring flight data from EgyptAir Flight 804 for clues into what caused the plane to spiral and plummet into the Mediterranean Sea Thursday, killing all 66 aboard, are now zeroing in on a four-minute sequence of events that unfolded before the plane's computers shut down.
Data transmitted from the plane to ground stations indicated that a window sensor in the cockpit first went off, followed by smoke detectors in the forward bathroom and electronics bay, analysis shows. Then the computers lost power.
Analysts told Fox News the four-minute sequence was likely too slow to indicate a massive explosion, but too fast for a fire or simple technical failure.
Investigators believe a theory on the terror side could be a small explosive device, similar to a shoe bomb or underwear bomb that was set off manually in the plane’s forward bathroom, prompting the smoke detectors to go off.