Pakistan army helicopters have been hovering over the site of a major assault on al-Qaida-linked fighters while officials have razed shops belonging to a tribal sympathiser of the organisation.
Pakistani jets have pounded areas near Wana in South Waziristan killing and injuring many.
Pakistani soldiers are enforcing a blockade of tribesmen suspected of harbouring al-Qaida linked fighters.
Four soldiers have been killed and three others injured in an attack on a Pakistan army camp in the remote tribal belt bordering Afghanistan.