Eight Turkish soldiers and 21 militants of the outlawed Kurdistan Workers Party (PKK) were killed on Friday, according to the military and media reports, as violence in the largely Kurdish southeast widened a day after two bombings.

After the collapse of a ceasefire between the PKK and the government last July, Turkey’s southeast has seen some of its worst violence since the height of the Kurdish insurgency in the 1990s.

Six soldiers were killed and eight were wounded in clashes with militants in the Southeastern Hakkari province, the military said in a statement.

Two more soldiers were killed in a separate incident when a military helicopter crashed in Hakkari due to a technical fault, while six PKK militants were also killed in an operation in that region, the military said.

Fifteen militants were killed in clashes in Sirnak province, broadcaster NTV reported, citing the Turkish military.