A suicide attack on a Pakistani Air Force bus in Punjab province killed eight people Thursday, while security forces claimed to have killed up to 70 pro-Taliban militants in renewed fighting in the northwest.
The suicide attack, carried out by a bomber on a motorcycle, took place near Sargodha airbase south of the capital, Islamabad.
Tuesday, a bomber killed seven people near Pakistan's army headquarters in Rawalpindi.
Elsewhere, officials in Northwest Frontier Province said Pakistani troops and pro-Taliban militants continued heavy fighting for control of Swat Valley.
A provincial official said the clashes started when militants attacked a military post and that 70 insurgents were killed. He denied reports that a large group of security forces has been surrounded and that the troops were preparing to surrender.
Thousands of residents have been fleeing the scenic tourist spot in Pakistan's North West Frontier Province.
Violence erupted last week after the army deployed some 25-hundred troops to Swat to quell militants seeking to impose strict Islamic law in the region.
The army says more than 180 people have been killed.