Two bombs exploded in the southern Turkish city of Adana late on Friday, injuring four people, state news agency Anatolian reported. The first bomb was placed outside a bank while the second exploded five minutes later at an office block in the centre of Adana, which is home to an airbase used by US forces.
No one claimed responsibility for the attacks. But a similar twin attack in the same city in early August was claimed by the Kurdistan Liberation Hawks, an organisation with links to the outlawed Kurdistan Workers Party (PKK), which launched a separatist campaign in 1984.
Turkey, like the United States and European Union, considers the PKK a terrorist organisation and blames it for the deaths of more than 30,000 people. Ankara has recently increased its troop presence in the mainly Kurdish south-east, where security forces are battling PKK guerrillas. Leftist and militants have also carried out bomb attacks in Turkey in the past.