The desperate search for a Malaysian jet which vanished carrying 239 people was significantly expanded on Monday with frustrations mounting over the failure to find any trace of the plane

The desperate search for a Malaysian jet which vanished carrying 239 people was significantly expanded on Monday with frustrations mounting over the failure to find any trace of the plane.
  
The initial zone spread over a 50 nautical miles (92 kilometres) radius around the point where flight MH370 disappeared over the South China Sea in the early hours of Saturday morning, en route from Kuala Lumpur to Beijing.
  
Malaysian authorities announced it was doubling the size of the search area to 100 nautical miles. "The area of search has been expanded in the South China Sea," Civil Aviation Department chief Azharuddin Abdul Rahman told reporters late Monday.
  
He also confirmed the search area covers land on the Malaysian peninsula itself, the waters off its west coast and an area to the north of the Indonesian island of Sumatra. The huge area now being covered reflects authorities' bafflement over the disappearance of the flight, with 40 ships and more than 30 planes finding no sign of it.

Malaysia has launched a terror probe after at least two of the passengers on board the plane were found to have travelled on stolen passports. Two European names -- Christian Kozel, an Austrian, and Luigi Maraldi of Italy -- were listed on the passenger list, but neither man boarded the plane.
  
Both had their passports stolen in Thailand in the last two years and questions swirled over how the two passengers using their documents managed to board the flight.
  
The United States has sent an FBI team to help investigate the passengers, but US officials stressed there was as yet no evidence of terrorism.