SINGAPORE: Nearly three days after it disappeared while en route from Kuala Lumpur to Beijing, mystery still shrouds the fate of Malaysia Airlines flight MH370 and the 239 people on board.

No debris from the Boeing 777-200ER has been recovered despite an international search involving the navies and air forces of several Asian nations as well as the United States.

… Q: Is security at Kuala Lumpur International Airport questionable?

Revelations that at least two people aboard the plane were using stolen European passports have heightened fears about a security breach.

Rohan Gunaratna, a terrorism expert at Singapore’s Nanyang Technological University, said the passport issue could indicate a “glaring flaw” in the airport’s immigration clearance.

He noted that Interpol maintains a database of stolen passports that should have raised alarms at the immigration counter.

“There are two categories of people who use these (stolen passports) — criminals and terrorists,” he said.