Authorities have identified the two passengers who used stolen passports to travel on the missing Malaysia Airlines plane.
Both are Iranian men. Neither is believed to have any terror link, easing initial fears that foul play could be behind the plane's disappearance.
Earlier in the day, Malaysian officials identified the first passenger as 19-year-old Pouria Nour Mohammad Mehrdad, who they believe was trying to emigrate to Germany.
But why were stolen passports used on the missing airliner? And how deep is the airport security flaw it exposes?
Earlier, I talked to Phil Robertson, Deputy Director Asia Division of Human Rights Watch. He contextualizes why Mehrdad would use a stolen passport to reach Germany.
Robertson says that after the Green Revolution in Iran, “There were many Iranians who fled to Malaysia. Malaysia is a country where you can get visa-free entry for many Middle East passports. And so a significant number of asylum seekers from Iran did end up in Malaysia."
As for what the incident says about airport security and screening in Malaysia, Robertson says, "It's very interesting. I was a bit surprised to see people with stolen passports elude security at the Malaysia airport. That's one of the more effective and efficient airports in Southeast Asia."
Click on to hear more from Robertson including his thoughts on whether the two men were part of a human smuggling operation, and the thriving trade for stolen passports in Southeast Asia.