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The theory that the missing Malaysian Airlines Flight 370 is a victim of terrorism appears no longer credible, according to the Interpol, because of the discovery of the users of the two stolen passports.
Interpol Secretary-General Ronald Noble identified them as 19-year-old Pouri Nour Mohammad Mehrdad and 29-year-old Delavar Sayed Mohammad Reza, both Iranians who appear to be economic migrants rather than terrorists.
Mr Noble said that Interpol has checked the background of Mr Mohammad through other police organisations, and the profile indicated he is not a member of any terrorist group, attempting to migrate to Germany.
Malaysian Police Inspector General Khalid Tan Sri added that Mr Mohammad's mum knew her son was using a stolen passport and contacted authorities when he didn't arrive as planned, while police agencies are still investigating the background of the other user of stolen passport.
Mr Khalid said that authorities are studying four possibilities, namely: hijacking, sabotage, personal disputes and psychological conditions of passengers and crew of the ill-fated jet.
One possible explanation is that someone purchased huge amounts of insurance or owes so much money to somebody else.
Malaysian Police are going through the files and photos of the 153 Chinese passengers in an attempt to find new leads.
Mr Khalid also rebutted a statement by Interpol that Malaysian authorities did not check the stolen passports against the Interpol database, which has 14.2 million reports of stolen passports, since they did not have prior information of the possibilities of terrorism and warnings of two stolen passports were not given to them.