At least 20 people were also wounded with casualties being reportedly rushed to hospital in taxis. Police reportedly opened fire to stop the suspects at an entry point. It appears that the attackers detonated explosives at the entrance to the international terminal. Recent bomb attacks in Turkey have been linked to either Kurdish separatists or the so-called Islamic State group. Turkish media report that two suicide bombers were involved in Tuesday's attack. It looks like a major, co-ordinated attack at the airport, BBC's Mark Lowen at Ataturk airport reports. The airport was long seen as a vulnerable target, our correspondent says. There are X-ray scanners at the entry to the terminal but security checks for cars are limited.