The incident took place in the Panjgur district on July 14 as the soldiers were on a routine patrol when they came under fire from "terrorists," the army said in a statement.

It said the wounded security personnel were in critical condition.

No group immediately claimed responsibility for the attack.

Resource-rich Balochistan, which borders Afghanistan and Iran, has been plagued by sectarian violence, Islamist militant attacks, and a separatist insurgency that has led to thousands of casualties since 2004.

Seven soldiers were killed in two separate attacks in the province in May.