Turkish President Recep Tayyip Erdogan says a person of Syrian origin is suspected to be the suicide bomber who attacked a district in central Istanbul.
Ten people are dead following a suspected suicide bomb attack in the popular touristic Sultanahmet area of central Istanbul.
The Istanbul governor's office said 15 people were also injured. The blast occurred at around 10:15 am (0815 GMT).
Broadcaster CNN Turk cited police sources saying they suspect a suicide bomber launched the attack, which struck near the Hagia Sophia museum and Blue Mosque, both major tourist attractions on the European side of the metropolis.