International agencies join air crash probe

International intelligence agencies have joined the investigation into the two passengers who boarded the missing Boeing 777 plane with stolen passports.

The move came as Malaysian authorities revealed that radar images showed the aircraft may have turned back before vanishing.

More than a day and half after Malaysia Airlines Flight MH370 went missing, Vietnamese authorities disclosed that a door from the ill-fated plane may have been sighted. However, the final minutes before it disappearance remain a mystery.