A roadside blast killed five policemen and three civilians, including a 4-year-old girl, in Turkey's southeast on Tuesday, an official said.
A police vehicle appears to have been the target for the attack in the town of Guroymak in Bitlis province, while the civilians were traveling in a truck behind, said provincial Gov. Nurettin Yilmaz.
The area has seen a spike in attacks by suspected Kurdish rebels seeking greater autonomy in Turkey, killing dozens of members of the country's security forces and at least 18 civilians since mid-July.
Since 1984, the conflict has killed tens of thousands of people.
Tuesday's attack came hours after police rounded up dozens of alleged Kurdish rebel supporters around the country.
Yilmaz said the civilian casualties were all from the same family, including the 4-year-old girl and a 13-year-old boy. Three other people were wounded in the explosion, he said.
One soldier was wounded in a separate roadside bomb attack in the southeastern province of Mardin, authorities said.