News: Update: Missing Malaysian Plane: Debris Found Off Vietnam?

Debris from the missing Boeing 777 flight is believed to have been found off Vietnam as Interpol investigates whether up to four passengers boarded the plane using stolen passports.
A Vietnamese search team has found what they believe is part of a door and an airplane's tail in the first major breakthrough in the hunt for missing aircraft.
The suspected fragments have been located around 50 miles from south-west of Tho Chu Island, the Wall Street Journal reported.
Investigators are narrowing the focus of their inquiries on the possibility that the plane disintegrated in mid-flight, a senior source said on Sunday
'The fact that we are unable to find any debris so far appears to indicate that the aircraft is likely to have disintegrated at around 35,000 feet,' said the source, who is involved in the investigations in Malaysia.
It comes as Interpol criticised Thailand's lax airport security after it emerged at least two passengers boarded the Malaysia Airlines flight MH307 with stolen passports - giving rise to the possibility that the missing 239 passengers are victims of a terrorist attack. Asked about the possibility of an explosion, such as a bomb, a source said there was no evidence yet and that the aircraft could have broken up due to mechanical issues.
Malaysian authorities have said they are focused on finding the plane and have declined to comment when asked about the investigations.