Pakistani forces killed up to 90 militants in two battles today in the South Waziristan region on the Afghan border, the military said.
The clashes came two days after hundreds of militants overran a paramilitary fort in another part of South Waziristan.
In one clash, government forces attacked militants who had gathered to attack a fort in the region, at Ladha, killing 50 to 60 of them.
"The miscreants, these terrorists, wanted to probably attack another fort and they were gathering there. Therefore, the security forces took action in retaliation," a military spokesman said.
In the second incident, militants ambushed a convoy and 20 to 30 of them were killed when security forces fought back, he said.
Both clashes were in areas of South Waziristan where an al-Qaeda-linked militant leader, Baitullah Mehsud, operates. The government claims Mehsud was behind the assassination of opposition leader Benazir Bhutto in Rawalpindi on December 27th.