Gunmen attack Pakistani army headquarters

SLAMABAD, Pakistan (CNN) -- Ten people died when camouflaged gunmen in a minivan opened fire Saturday at a Pakistani army headquarters checkpoint, a top military spokesman said.

Pakistani troops inspect a bus damaged in a blast in Rawalpindi on July 2, 2009.

Four gunmen and six army guards died in the raging gunbattle in Rawalpindi, army Gen. Athar Abbas told CNN affiliate Geo TV.

A search operation was under way for two militants involved in the attack, he said.

It was the third major attack in Pakistan this week.

A suicide car bomb carrying 50 kilograms (110 pounds) of explosives killed at least 52 people Friday in the northern city of Peshawar.

It was the deadliest suicide attack ever in Peshawar, said government officials.

A suicide attack at the offices of the U.N. World Food Programme in Islamabad on Monday killed five employees and wounded several others.