Militants in northwest Pakistan set off a bomb while targeting a temporary military camp with rockets and guns, in an incident that killed at least three troops, security officials said on Friday, but there was no immediate claim of responsibility.
The violence comes after Pakistan declared a new offensive against militants following a resurgence of attacks in recent months, such as a February mosque bombing that killed more than 100.
Troops engaged the attackers for several hours from Thursday night in the district of Lakki Marwat, near a rugged tribal area bordering Afghanistan, two officials told Reuters, on condition of anonymity as they were not authorised to provide information.
