"The main cities in the Swat valley stand clear today. The operation is being conducted in the countryside to the right and left of the valley and to the North... so the operation is ongoing and it will take a little more time," army spokesman Maj Gen Athar Abbas told the BBC.
But while Maj Gen Abbas said the remaining militants were being hunted down, he could not confirm when the army's operation in the area would be complete.
"It's difficult to give a timeline because this is an elusive enemy that has strongholds in the countryside," he said.
With journalists barred from the area, it is impossible to verify the situation independently.
The International Red Cross said water and electricity were not available in Swat, there was no fuel for generators, most medical facilities had stopped operating and food was scarce.
"The people of Swat need greater humanitarian protection and assistance immediately," said Pascal Cuttat, head of the organisation's delegation in Pakistan.
Some 2.5 million people have fled their homes since military operations began in Swat more than a month ago.
Soldiers continued to patrol Mingora's largely deserted streets on Saturday, securing neighbourhoods and checking houses for booby-traps.
People shop amid the rubble in Mingora, a day after the army said it was retaken
Pakistan has increased its reward for the capture of the Taliban leader in Swat, Maulana Fazlullah, to 50m rupees ($600,000).
The radical cleric is believed to be the architect of a two-year uprising in the valley aimed at enforcing Islamic law.
It is thought that the Taliban responded to the military campaign this week with a major suicide bomb attack on the country's second-biggest city, Lahore, as well as bombings in two other cities in the north-west.
The US is giving full backing to the Pakistani operations, which are linked to its own offensive against the Taliban in Afghanistan, our correspondent says.
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