A number of unknown gunmen shot dead 13 bus passengers in northern Balkh province on Saturday, local officials said.
The incident took place in Zare district of the province after the gunmen stopped a passenger bus which was travelling to Mazar-e-Sharif, the capital of the province, provincial acting governor, Jafar Haidari said.
However, the officials did not provide further details about the incident.
Local officials said the police have started investigations into the attack.
No group including the Taliban has yet claimed responsibility for the attack.