Istanbul Airport Bombing: What We Know So Far

More than 40 people have been killed and 147 have been injured in attacks at Ataturk International Airport, Istanbul's largest airport.

Here is what we know:

- Three bombers targeted the international terminal of the airport.

- The attackers detonated their suicide vests after police opened fire on them.

- The death toll includes 23 Turks and 18 foreigners. At least five were from Saudi Arabia.

- The attackers arrived in a taxi before the attack and there was no lapse in airport security, according to Turkish Prime Minister Binali Yildirim.

- CCTV video from the airport appears to shows one of the attackers detonating his vest after being shot.

- The U.S. Embassy in Turkey has issued a travel warning for the country.

- Turkey has recently suffered a spate of suicide attacks in Istanbul and Ankara.

What we don't know:

- No group has claimed responsibility for the attack, although the Turkish government believes the Islamic State was behind the attack.

- Nationalities of all of the victims.

- The identities of the attackers.

(This story has not been edited by NDTV staff and is auto-generated from a syndicated feed.)