Another update from the German media (CNN affiliate n.tv), citing the chief investigator and the Greek defense ministry who rely on the now released testimony of the F16 fighter pilots:
"The jet fighter pilots took a picture of the cockpit at 1118hrs, showing the co-pilot slumped over the control panel. 30 Minutes before the crash (i.e.: 1134 hrs), two people entered the cockpit of the stricken airliner, allegedly two flight attendants, the male with pilot training, the female his fiancée. The guy's name is reported as Andreas Prodromou, 25 years old, his fiancée is said to be one Haris Charalambous. The theory at this point is that they were able to survive on portable oxygen available to F/A in the cabin. The F16 fighter pilots took a picture of what was going on in the cockpit at 1140hrs.
The aircraft then left its holding pattern 23 minutes (1141hrs) before the crash, heading in the direction of ATH. Interpretation is that the F/A switched the AP off. The aircraft descended to approx. 10.000ft and then to 2.500ft (other news say 9.000ft and 7.000ft) over the sea. At that altitude, it started heading towards ATH airport and started slowly climbing again as if the F/A noticed he was too low.
The interpretation at this point is that the aircraft ran out of fuel, only a few miles out of ATH airport, and crashed at Grammatikos."