The airline says technical faults or human errors couldn't have caused Metrojet Flight 9268 to crash.<br />But Russian officials say it's too soon to tell what made the passenger jet plunge to the ground Saturday, killing all 224 people on board.<br />Experts agree it's too early to know for certain, and officials have downplayed an apparent claim by Islamic militants that they brought down the Airbus A321-200, saying technical failure is the most likely reason for the crash.<br />Air traffic controllers apparently didn't receive any distress calls.<br />"There was nothing abnormal before the plane crash," Egyptian Civil Aviation Minister Hossam Kamel said Saturday.<br />"It suddenly disappeared from the radar."<br />The website Flightradar24, which tracks aircraft around the world, said it had received data from the Russian plane suggesting sharp changes in altitude and a dramatic decrease in ground speed before the signal was lost.
