Interpol Secretary General Ronald Noble (R) stands during a news conference at the Interpol headquarters in Lyon, March 11, 2014. The head of international police agency Interpol said on Tuesday he did not believe the disappearance of a Malaysia Airlines plane at the weekend was a terrorist incident, suggesting two men who boarded using stolen passports may have been smuggled by traffickers. The plane carrying 239 people on board has now been missing for four days, with a search involving crews from 10 nations widening on Tuesday to a larger swathe of the Gulf of Thailand and South China Sea. The screen shows two Iranian passport holders, Pouri Nourmohammadi and Delavar Seyed Mohammadreza. Noble said two Iranian passport holders aged 18 and 29, who started their trip in Doha, had swapped their passports in Kuala Lumpur and used stolen Italian and Austrian passports to board the now missing Malaysian airliner. [Photo/Agencies]

 User of stolen passport not linked to terrorism

Malaysia's military believes it tracked missing plane