Three people have been injured in a bomb explosion in central Istanbul.
It is believed that the bomb was left in a rubbish container.
The blast happened in Eminonu, a major departure point for buses in Turkey's largest city.
There was no immediate claim of responsibility.
Istanbul, a popular tourism destination, has been struck by a series of bombings in recent months.
Scores of soldiers and rebels of the outlawed separatist Kurdistan Workers Party (PKK) have also been killed in separate clashes amid a rise in violence in Turkey's southeast.
Militant groups, including Kurdish separatists, Islamists and ultra-leftists, have carried out attacks on civilians, security and military targets in Turkey in the past.
More than 30,000 people, mostly Kurds, have been killed in the separatist conflict since the PKK took up arms against the state in 1984 with the aim of carving out an ethnic homeland.
The European Union and the United States, like Ankara, view the PKK as a terrorist group.
