At least three people have been killed in an suicide bomb attack near a government office in the southern Afghan province of Kandahar.

Two of the dead were police officers, Zalmai Ayubi, a provincial government spokesman said.

"Two policemen and a civilian were killed and two other  policemen in the premises were wounded," he said.

A unnamed spokesman for the Kandahar governor told Al Jazeera that the attacker had disguised himself in a police uniform and attempted to enter the district chief's office in Dand district.

He was shot by police but was still able to detonate his explosives.

Ayobi said that Taliban fighters carried out the attack, although no group or individual has claimed responsibility.

In recent months, fighters linked to the Taliban and al-Qaeda have been resurgent against Afghan security forces and troops from the Nato military alliance.

On Sunday, a suicide attacker killed two Afghan civilians and wounded two German soldiers serving with Nato in the northern province of Baghlan.

Two US soldiers were injured on the same day in a bomb attack on the outskirts of the western city of Herat, the US military said.