A suspected member of the Islamic State (IS) group has killed 10 people, at least eight of them German tourists, in a suicide bombattack in the Turkish city of Istanbul, officials say.
They say the Syrian national carried out the attack in the Sultanahmet district, near the famous Blue Mosque.
Fifteen people were wounded, many of them also German.
President Recep Tayyip Erdogan said Turkey was the "top target for all terrorist groups in the region".
Turkish Prime Minister Ahmet Davutoglu telephoned German Chancellor Angela Merkel to offer his condolences, the Anadolu news agency said.
Mr Davutoglu later said: "We have determined that the perpetrator of the attack is a foreigner who is a member of Daesh [IS]."