Security forces have killed up to 60 Taliban militants in the military offensive in Buner district in the past 24 hours, a top military spokesman said Friday. The security forces have killed about 55 to 60 militants in Buner district, while two security men were killed and eight injured in the operation, Major General Athar Abbas told a press conference here. Abbas said the militants killed in Buner included some foreigners. However he did not give any details of their identity. Abbas said forces also arrested a suicide bomber while the operation is going smoothly. Pakistan Army launched an operation in Buner district of North West Frontier Province (NWFP) on Tuesday afternoon facing the Taliban expansion.