巴基斯坦陆军基地遭遇自杀式炸弹袭击

A suicide bomber has attacked an army facility in Pakistan's troubled north-west, killing at least 20 soldiers and injuring others, officials say.

巴基斯坦官员称，一个人体炸弹袭击了动乱的西北部地区的一座军事设施，杀死至少20名士兵并使多人受伤。

Police described the bomber, who struck in the city of Mardan, as a male teenager dressed in school uniform.

He attacked as recruits（新兵） conducted morning exercises.

There had been a relative lull（间歇，暂停） in attacks on the army in the region, where Taliban militants are active, correspondents say.

Prime Minister Yusuf Raza Gilani condemned the attack on the Punjab Regiment Centre.

"Such cowardly attacks cannot affect the morale（士气，斗志） of the security agencies and the resolve of the nation to eradicate（根除，灭绝） terrorism," he said in a statement.

Previous attack

Mardan police official Abdullah Khan told the BBC that the teenage bomber had been wearing the uniform of a school located in the area, Aziz Bhatti College.

The bomber struck at 0800 (0300 GMT) as recruits were doing physical training on the parade ground, he said.

A bomb attack on the same centre in 2006 killed at least 20 soldiers.

The Punjab Regiment is one of Pakistan's most famous military units.