>> reporter: malaysian police are now looking at three areas, hijacking, sabotage, and psychological or personal problems with the passengers or crew. >> was there someone unauthorized in the cockpit, ordered the transresponder turned off, ordered the plane a 90-degree turn off course? did one of the pilots do it themselves. >> reporter: authorities now say they've identified the two passengers traveling on stolen passports. they're not believed to have any ties to terror. one of the passengers, 18-year-old pouria nour mahammad mehrdad was trying to get to germany where his mother lived. the other was delavar syed mohammad reza. malaysian officials have been asked about in-flight protocol and say cockpit doors are always kept closed during flight. one woman told an australian news magazine the copilot of the missing plane allowed her and a friend in the cockpit in 2011. they say they were in the