At least 10 people have been killed in an explosion on a minibus in Gecitli in Turkey's southeastern Hakkari province.
The blast is believed to have been triggered by a remote-controlled device.
The vehicle was taking villagers to Hakkari city centre when it hit the mine in the village near the border with Iraq and Iran.
The blast also wounded three people.
Security forces immediately headed to the area to scour the scene for more explosives.
Immediate suspicions for the blast fell on the outlawed Kurdistan Workers' Party, which has been fighting for self-rule in the country's mainly Kurdish southeast since 1984.
The blast comes during a truce that the PKK announced between 13 August and 20 September that covered the Muslim holy month of Ramadan and a referendum on constitutional changes held on 12 September.
The government last year announced a plan to increase rights and liberties for its Kurdish population in a bid to pressure the PKK into abandoning arms.
But it has said it will not take any steps that would jeopardise the country's territorial unity.
The plan has since run into trouble amid increasing public anger over a series of deadly PKK attacks against security forces since last year.
The PKK, listed as a terrorist group by Turkey and much of the international community, took up arms for self-rule in the Kurdish-majority southeast in 1984, sparking a conflict that has claimed around 45,000 lives.
