Islamabad, Pakistan (CNN) -- Security forces killed six alleged militants and arrested 13 during an operation in southwestern Pakistan on Wednesday morning, authorities said.
The forces launched a search operation after receiving information that Taliban militants had been spotted in the Zhob area in Balochistan province, said Hamid ul Karim, a senior administration official.
"Both sides used heavy weapons during exchange of fire," he said.
The clashes left two security forces injured.
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Security forces recovered arms and ammunition from the militants, according to Karim.
The alleged militants are in custody and an investigation is under way.
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