Malaysia on Sunday launched a terror probe into the disappearance of a passenger jet carrying 239 people, investigating suspect passengers who boarded with stolen passports, as relatives begged for news of their loved ones

Malaysia on Sunday launched a terror probe into the disappearance of a passenger jet carrying 239 people, investigating suspect passengers who boarded with stolen passports, as relatives begged for news of their loved ones.
  
The United States sent the FBI to investigate after Malaysia Airlines flight MH370 vanished from the radar early Saturday somewhere at sea between Malaysia and Vietnam, but stressed there was no evidence of terrorism yet.
  
Malaysian authorities also expanded their search for wreckage to the country's west coast, asking neighboring Indonesia for help. Searches so far had concentrated on waters to the country's east, in the South China Sea.
  
A total of 40 ships and 22 aircraft from an array of countries including China and the US are now involved in the hunt across the two areas, officials said. "There is a distinct possibility the airplane did a turn-back, deviating from the course," said Malaysia's air force chief, General Rodzali Daud, citing radar data.
  
But Malaysia Airlines (MAS) chief executive Ahmad Jauhari Yahya said the Boeing 777's systems would have set off alarm bells. "When there is an air turn-back the pilot would be unable to proceed as planned," he said, adding authorities were "quite puzzled" over the situation.
  
After it emerged that two people boarded the flight with stolen European passports, Malaysia's transport minister Hishammuddin Hussein said he was looking at four suspect passengers in all. He declined to offer details, saying authorities were examining "the entire manifest", but confirmed the US Federal Bureau of Investigation (FBI) was dispatching personnel to Malaysia.
  
"At the same time our own intelligence has been activated, and of course, the counter-terrorism units... from all the relevant countries have been informed," Hishammuddin said, refusing also to rule out the possibility of a hijack.