Pakistan's military says 24 soldiers were killed on Saturday when a suicide car bomber struck a military convoy in northwestern Pakistan.
A military spokesman, Major General Waheed Arshad says 28 soldiers also were wounded in the attack.
Officials say the attacker rammed his explosives-laden car into a military convoy in North Waziristan, near the border with Afghanistan.
It was the second attack on security officials in northwest Pakistan on Saturday. In another incident, suspected militants detonated a bomb near a military vehicle, wounding two soldiers.
Thousands of troops have been deployed to the northwest to monitor rising militant activity in the region.
The attacks follow the storming of a radical mosque in Islamabad on Tuesday, killing at least 105 people.
President Pervez Musharraf ordered the attack on the Red Mosque after a week-long standoff. Scores of militants and 10 Pakistani soldiers were killed during the two-day assault.
Anti-government protests were held Friday in all major cities, including the capital, Islamabad, and Karachi, Peshawar and Lahore.
Clerics and students at the Red Mosque had challenged government authority for several months with a campaign to impose strict Islamic law in Pakistan.
Military officials say the mosque complex was being used to train militants and to plan suicide bomb attacks.