( dpa ) - Following a deadly car bomb attack in the south- east of Turkey, police have arrested four suspects, Anadolu news agency reported Friday.
The district attorney in Diyarbakir said that the police have been given a special investigation warrant until January 20 in the case.
Five people were killed in the bomb attack Thursday evening, including four students.
The car was packed with explosives and parked near a school, where it was detonated when a Turkish Army bus was passing.
Sixty-eight people were also injured in the attack.
Turkey's south-east has seen an escalation in the conflict between the army and the banned Kurdish People's Party (PKK) after the PKK launched several lethal attacks on army positions.
Dozens of soldiers were killed in the attacks.
The Turkish Army claims to have killed 312 PKK fighters in the past year.