A home-made bomb planted in a rubbish bin has injured a 25-year-old woman in southern Turkey, officials say.
One person dressed as a dustman was held in connection with the blast in the Mediterranean port city of Mersin.
It follows a series of bombings in Turkish resorts and Istanbul on Sunday and Monday, which left three people dead and dozens injured.
A separatist militant group, the Kurdistan Freedom Falcons (Tac), has said it carried out those attacks.
It warned on its website on Tuesday that it would turn "Turkey into hell".
The group, which is said to be linked to the outlawed Kurdistan Workers Party (PKK), called on foreign tourists not to travel to the country.
The Turkish woman suffered wounds to her arm after Wednesday's bomb blast, officials said, adding that she was being treated in hospital.
The blast smashed windows in cars and buildings nearby.
Security has been tightened on Turkey's Mediterranean and Aegean coasts.
The Turkish economy is heavily reliant on tourism, which Kurdish separatists have repeatedly threatened to target.