Information I have just come across:
*The pilot was a senior pilot, making very strange that he was flying the red eye.
*The pilot was found to have a commercial flight simulator at his house. Speculation states that it was used to plan the planes disappearance.
*The plane was carrying 50 less passengers than capacity and barely enough fuel for the flight, pointing to the fact that the plane could have been hijacked for its cargo.
*The fact that all this happened at night means there is an increased chance that it was hijacked and flown elsewhere and landed. Hijacking it a night means they can turn off the nav lights as well as the comms systems, and no one could find them.