Afghan officials say insurgents in western Afghanistan have attacked a police patrol, sparking a clash that left four policemen and four insurgents dead.
Officials say at least four police were wounded in Wednesday's clash in western Farah province.
The attack took place close to where gunmen killed a United Nations aid worker in the provincial capital, Farah city.
Police say militants fired on the car of the Afghan employee of U.N. Habitat, the organization's human settlements program.
In the southern city of Kandahar, Afghan police say a suspected suicide bomber is the sole victim of an attack on a mosque.
Police say the bomber detonated explosives inside an empty mud-brick mosque Wednesday. The blast destroyed several rooms and walls in the building, but police say there were no other casualties.
Some information for this report was provided by AFP and AP.