Suicide bomber strikes in western Afghanistan

A suicide bomber in a four-wheel-drive vehicle has blown up his cache of explosives in Herat province in western Afghanistan, killing or wounding more than 20 people.

Nasar Ahmad Popul, the chief of Guzara district, says the explosion occurred Tuesday morning at the entrance to the district headquarters.

He says there are casualties among civilians and police and damage to the police and district headquarters.

The attack occurred as people were gathered outside the building waiting to go inside to see government officials about various business matters.

Raouf Ahmedi, spokesman for the regional police commander, says more than 20 people have been killed or wounded.