The blast hit the armoured vehicle on the highway linking Diyarbakir, the largest city in the mainly Kurdish southeast, to the district of Lice. Sources had previously said the explosion hit a convoy of vehicles.
According to Turkish media, when the convoy came under attack it was traveling between Diyarbakir and Bingol.
The blast comes just a day after suicide bomber targeted a military convoy near Parliament House and Presidency in Ankara. As many as 28 people were killed in the blast.
The Turkish authorities have claimed that the suicide bomber, who carried out Wednesday’s attack, was a Syrian national.
Meanwhile media reports also suggest that Turkish air force jets have targeted hideouts of Kurd fighters along Syrian border.