Two soldiers were martyred and three injured in a landmine blast in South Waziristan's Barmal area on Sunday.
A forces jeep was patrolling the area during a search operation when it struck a landmine planted on the roadside, security officials said.
Two personnel died on the spot while three were critically injured. The injured were moved to Field Hospital, Wana.
Forces began a search operation in the area following the incident but no arrests were reported.
A statement from the army's media wing, Inter-Services Public Relations, named the two martyred soldiers as Sepoy Attaur Rehman and Sepoy Imran Ali.