At least 10 Afghan National Army (ANA) soldiers and 3 civilians were killed Saturday in a roadside blast in Sar-e-Pul province, a security source said.
According to the source, three others were wounded.
The blast occurred in the capital of the province.
Security officials have not commented yet.
So far no group, including the Taliban, has claimed responsibility.
Meanwhile, a mine was discovered on a Baghlan road and detonated as it could not be removed, said Ministry of Defense.