The Transportation Safety Board says it has determined both engines were operating when the plane crashed in northern Saskatchewan last week.

The chief investigator in the EgyptAir plane crash that killed all 66 people on board last week says search teams in the Mediterranean have picked up a beacon believed to be from the doomed aircraft.

Strong currents and blinding silt thwarted an attempt by divers to find AirAsia Flight 8501's black boxes Thursday, which they hope are still located in the recently discovered tail of the plane.