Two people on board missing Malaysia Airlines flight 370 were using passports reported as being stolen in Thailand

2 on missing Malaysia jet used stolen EU passports – WP, March 8, 2014
…The Italian Interior Ministry issued a statement that the man also reported it stolen on Aug. 1, 2013, after his return to Italy, and that the stolen document had been entered into the Interpol database…

Two people who boarded Flight 370 using stolen passports appear to have bought their tickets together, records show

Radar showed missing Malaysian Airlines flight 370 may have turned back