According to a statement from the Inter Services Public Relations (ISPR), the incident took place in the Pre Ghar area on the border between North and South Waziristan tribal regions.
"At least nine terrorists were killed in a cordon and search operation. Four soldiers also embraced shahadat (martyrdom)," the military said in a statement.
Read: Five militants, one official killed in attack on security check post in North Waziristan
The army began a major campaign against Taliban and other militant strongholds in the North Waziristan tribal area in June last year and authorities have now vowed to intensify operations both in the border regions and across the country.
The military says more than 2,700 militants have been killed since the launch of the major offensive.
The armed forces have been engaged in military operation Zarb-e-Azab in North Waziristan since June 2014. Officials claim that most of the tribal region has been cleared of terrorists, except Data Khel.
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