Clashes in Libya’s second city Benghazi killed at least one soldier after the son of the army’s special forces commander there was kidnapped Thursday, a military source and witnesses said.

Medical sources said at least one member of the special forces was killed and two of his colleagues were wounded.

The clashes broke out as heavily armed special forces troops backed by helicopters tracked the abductors of student Ali Abu Khamada, son of their commander Wanis Abu Khamada, after he was “kidnapped by unknown persons near Gar Younes university”, a military source said.