Intelligence officials say clashes between the Pakistani military and the Taliban have left around 50 insurgents dead in a tribal region bordering Afghanistan.
The officials say two soldiers also died and 23 were wounded in the fighting in various parts of South Waziristan since Saturday night.
Fighting in South Waziristan has heated up in recent days amid a Pakistani military offensive against the Taliban in the nearby Swat Valley. South Waziristan is the main base of Pakistan's Taliban chief.
The two officials spoke on condition of anonymity because they were not authorized to speak to media. The information could not be independently verified because of restricted access to the remote, dangerous area.