Four passengers were likely using other people's passports aboard the MH370 airline and Malaysia is working closely with international intelligence and anti-terror organizations to investigate the case, said Malaysia's acting Transport Minister Datuk Seri Hishammuddin Hussein.
Malaysian authorities are investigating the identities of at least two other passengers on a missing Malaysia Airlines flight, in addition to two who were found to be using stolen passports, a security official said.
Investigators were verifying the identities with the relevant embassies in Malaysia, said the official, who has knowledge of the investigation and declined to be identified. The passengers being checked had all bought their tickets through China Southern Airlines, the official said.
The flight carrying 227 passengers and 12 crew was presumed to have crashed off the Vietnamese coast on Saturday, after losing contact with air traffic controllers off the eastern Malaysia coast.