A bomb exploded outside a branch of British-based HSBC bank in Diyarbakir, southeastern Turkey, today and one person was injured, security officials said.
The bomb was planted in an automated teller machine and caused serious damage, the officials said.
Kurdistan Workers Party (PKK) rebels have set off a series of bombs in the mainly Kurdish southeast in recent months. Last week three people, including the bomber, were killed in an explosion claimed by the PKK as a suicide attack.
Ankara blames the PKK for some 30,000 deaths since the rebels launched an armed campaign for an independent Kurdish homeland in 1984. Earlier this month, Turkey launched a large operation against rebels near the Iraqi border.
Another Kurdish group called the Kurdish Liberation Hawks, widely thought to have links to the PKK, is also running a bombing campaign and last month attacked an Istanbul supermarket and an Internet cafe.
HSBC's Istanbul branch was among targets hit by a series of suicide attacks in 2003 which killed more than 60 people. Responsibility was claimed by a group linked to al Qaeda.
No one at HSBC was available to comment today.
The European Union -- which started membership talks with Turkey last October -- has urged Ankara to do more to relieve poverty in the southeast and to increase the cultural rights of its large ethnic Kurdish population.