This appears to be an ongoing event although it is hard to tell this close to the attack what the facts or details are.
UPDATE: 4:35 p.m. EDT — Turkey's justice minister, Bekir Bozdag, told reporters Tuesday that about 20 people were injured in explosions at the Atatürk Airport. The minister revealed to CNN that a suspect "first opened fire with a Kalashnikov then detonated himself."
The Independent reports 10 dead at Ataturk International in Istanbul (Constantinople)
At least 10 people have been killed in a bomb attack on Ataturk airport in Istanbul, Turkey.
Around 40 people were wounded in the blasts at the capital's main international airport, according to Turkish news broadcaster Haberturk.
Officials have said police fired weapons on two suspects who then blew themselves up before passing through the first x-ray security checkpoint.
*** UPDATE *** BBC REPORTING 28 DEAD
*** UPDATE 2 ***
Moment of actual blast
UPDATE: The Daily Mail - ESTIMATE NOW AT FIFTY DEAD and 147 Injured