Pakistanis flee army offensive near Afghan border
At least 20,000 people have fled fierce fighting between troops and militants in the Pakistani tribal region of Mohmand, officials and witnesses say.
Many of the displaced are sheltering in temporary camps, the authorities say.
Troops have been using helicopter gunships and heavy weapons to pound suspected militant positions for a week, according to residents.
Mohmand, on the border with Afghanistan, has long served as a sanctuary for the Taliban and al-Qaeda.
Pakistani officials say the army has sustained an unspecified number of casualties and that more than 70 insurgents have been killed in the fighting so far.
There is no independent confirmation of the claim - independent media have no access to the area.
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