Afghan police say gunmen have killed eight officers at a police post in the country's south.

A local police chief says the attack occurred late Thursday in the Panjawi district of Kandahar province. He says the attackers threw a grenade at the post before firing shots.

At least one other officer was wounded in the incident, and two are missing.

The area is known to be a stronghold for Taliban insurgents, but it is not clear if militants were responsible for this attack. An investigation is under way.

In a separate incident, police say a roadside bomb struck a police vehicle in central Ghazni province, killing at least two officers and wounding several others.

Authorities blamed Taliban militants for the attack.

Some information for this report was provided by AFP and.