Istanbul eyewitness: 'We heard some screams and a bang'
At least 39 people, including at least 15 foreigners, have been killed in an attack by a gunman on a nightclub in Istanbul.
Eyewitness Ismail Celebi was nearby when it happened.
At least 39 people, including at least 15 foreigners, have been killed in an attack by a gunman on a nightclub in Istanbul.
Eyewitness Ismail Celebi was nearby when it happened.