"We decided to join the parliamentary procedures" from Saturday when parliament reopens after a summer recess, Selahattin Demirtas, co-chair of the Peace and Democracy Party (BDP) told a news conference.

BDP deputies, supported by the bulk of Turkey's 15 million Kurds, boycotted parliament's swearing-in after the June 12 elections after one of its elected candidates was barred from taking his seat.

The party won 36 seats in the 550-member house but the poll commission stripped deputy Hatip Dicle of his seat over a conviction for spreading "terrorist propaganda."

It was awarded to a runner-up from the ruling Justice and Development Party (AKP).

The decision comes amid escalating tension and civilian deaths during attacks by the Kurdistan Workers' Party (PKK), which took up arms in 1984, sparking a conflict that has claimed about 45,000 lives.

Turkish Prime Minister Recep Tayyip Erdogan Wednesday urged Kurds to rise up against the increasing violence, saying: "What does this (violence) have to do with a struggle for cultural rights?... How can your culture allow you to mercilessly kill people?"

Last week, a bomb attack carried out by a radical Kurdish group which Turkey says is affiliated with the PKK rocked the centre of Turkish capital Ankara, killing three people and injuring at least 15.