airlines 370. officials told us they're leaning towards the theory that the pilots were responsible. this much is clear. what happened on malaysian airlines 370 was no accident, but over the weekend, the stopped short of saying the mystery was a as a result of something sinister. >> despite the report that is the plane was hijacked, i wish to be clear. we are still investigating all possibilities as to what caused 370 to deviate from the original flight path. you look at the incidents and we have no idea. >> this investigation entered its second crucial week and it has been an agonizing two weeks looking for th plane. a crucial part is looking at the pilot and copilot and seeing their involvement in the