Pakistani fighter jets resumed airstrikes in North Waziristan on Monday, a day after the army announced the start of a major military operation to flush insurgents out of the volatile region bordering Afghanistan.
Military sources said combat aircraft pounded targets in the region's Shawal sector, killing at least 21 militants.
Independent confirmation or other details were not immediately available in a region where journalists are not allowed to operate freely.
With your current subscription plan you can comment on stories. However, before writing your first comment, please create a display name in the Profile section of your subscriber account page.