- Turkish media reports casualties after blast in Sultanahmet square in centre of city.
- The square is a major tourist attraction.
- At least 10 people were killed and 15 injured, a statement from the Istanbul governor\'s office said.
According to reports from Dogan news agency , an explosion has rocked the Sultanahmet square in central Istanbul, causing some casualties. According to Reuters reports, the square is a major tourist attraction.
At least 10 people were killed and 15 injured, a statement from the Istanbul governor's office said.
The area is sealed off due to fear of a second explosion. Ambulances and police have arrived at the scene.
Witnesses apparently reported hearing a loud blast. Video footage on the CNN Turkey channel showed police and ambulances at the scene of the incident. The cause of the explosion has not been ascertained yet.
Kurdish, leftist and Islamist militants have all carried out attacks in Turkey in the past. Turkey has also become a target for Islamic State, with two bombings last year blamed on the radical Sunni Muslim group, in the town of Suruc near the Syrian border and in the capital Ankara, the latter killing more than 100 people.
This is a breaking news story that is being updated.