Malaysian police have identified one of two men who boarded flight MH370 with fake passports as a 19-year-old Iranian called Pouria Nour Mohammad Mehrdad.
"We believe he is not likely to be a member of any terror group and we believe he was trying to migrate to Germany," said Malaysia's national police chief Khalid Abu Bakar.
One of the men who boarded flight MH370 on a fake passport, Pouria Nour Mohammad Mehrdad, was making his way from Malaysia to Frankfurt via Beijing and Amsterdam, police have said. He was seeking asylum in Germany.
Speaking in Kuaka Lumpur, Inspector General of Police Khalid Abu Bakar said: "We are looking into four areas. One is hijacking, two sabotage, three psychological problem of the passengers and crew, and four: personal problems among the passengers and crew."
Away from the fake passports, search and rescue teams today expanded their search for the plane to include a vast area on the west peninsula of Malaysia at the Straits of Malacca.
One theory is that the flight tried to turn back to Subang in Malaysia.
Catch up on the story of the missing plane so far as Niall Paterson presents a 12-minute special feature on Sky News at 2.30pm GMT.
The search and rescue operation is being conducted with the help of Australia, China, Thailand, Indonesia, Singapore, Vietnam, the Philippines, and the United States. Nine aircraft and 24 ships are currently deployed.
According to investigators, the last known position of MH370 before it disappeared off the radar was 065515 North (longitude) and 1033443 East (latitude).