Ambulance cars arrive at Turkey's largest airport, Istanbul Ataturk, Turkey, following a blast June 28, 2016. REUTERS/Osman Orsal

Ambulance cars arrive at Turkey’s largest airport, Istanbul Ataturk, Turkey, following a blast June 28, 2016. REUTERS/Osman Orsal

Ambulance cars arrive at Turkey's largest airport, Istanbul Ataturk, Turkey, following a blast June 28, 2016. REUTERS/Osman Orsal

June 28, 2016 4:38 PM (UTC+8)