You're reading: Associated Press: IS believed to be behind Istanbul airport attack (live updates)

A senior Turkish government official has told The Associated Press all initial indications suggest the Islamic State group is behind the attack at Istanbul's Ataturk airport. The official also said nearly 50 people were killed in the attack on June 28 at the airport's international terminal and as many as four attackers may have been involved.

Read the latest on the explosions at Istanbul’s Ataturk airport here.