Kabul - A suicide bomber in police uniform blew himself up inside police headquarters in northern Afghanistan, killing one US soldier and wounding seven other people including police officers, police said Monday.

"One American soldier was killed and two others were wounded in the blast this morning," Jaweed Basharat, spokesman for provincial police chief told Deutsche Presse-Agentur dpa.

He said four Afghan police officers and one child were also wounded in the Monday's blast.

The bomber, who was in police uniform, tried to enter the police chief's office in Puli Khumri, the capital of northern Baghlan province, and detonated himself when he was stopped by the guards.

Provincial governor Abdul Jabar Haqbeen confirmed the attack, saying the bomber planned to target the police chief and his US advisors.

No group immediately took responsibility for the attack, which is rare in the northern region, largely devoid of the Taliban militants active in the south. (dpa)