It was the latest in a spate of bombings that have rocked Turkey in recent months as the authorities battle to contain the fallout from the civil war in neighbouring Syria and an escalating insurgency by Kurdish separatist guerrillas.
Last summer, Isis targeted a gathering of Kurdish activists in the town of Suruc with a suicide bombing that killed 33 people, and in October the capital Ankara was the scene of the worst terror attack on Turkish soil when 102 people at a peace rally were killed in a suicide blast.