An Aeroflot plane en route from Moscow to Havana has deviated from its course, FlightAware live flight tracking indicates. The news has sparked online speculation that NSA leaker Edward Snowden may be aboard the aircraft.

Aeroflot flight 150 to Havana took off from Moscow’s Sheremetyevo airport at 14:10 pm local time (10:10 GMT) on Thursday. Whistleblower Edward Snowden has been holed up in the airport for the past two weeks.

The flight route usually passes over Scandinavia and across Greenland before turning south over Canada and the United States. However, this time the flight headed west across Europe before continuing its path over the Atlantic Ocean.

The detour has spawned speculation in the media and on Twitter that Snowden may be aboard the plane and that that the plane may be trying to avoid entering US airspace. Snowden is wanted in the US on charges of espionage for revealing secret NSA surveillance programs.

The plane is expected to land in the Cuban capital around 00:30 GMT. Upon its arrival in Havana, it may finally become clear whether Snowden has left Moscow or not.

Under Russian law, air carriers are banned from sharing flight passenger data to third parties, Aeroflot spokesman Andrey Sogrin told RT.

Click here for the full story.