Separate roadside bomb blasts wounded four coalition soldiers and four Afghan troops in Afghanistan on Friday, officials said.

The coalition soldiers were wounded when their vehicle was struck by a roadside bomb blast in eastern Nangarhar province's Khogyani district, said U.S. spokesman Sgt. Chris Miller. No details on the soldiers' nationalities or injuries were provided.

An explosion earlier in the day wounded four Afghan soldiers patrolling in southern Zabul province's Mizan district, said Gen. Rehmatullah Raufi, army commander for southern Afghanistan.

CountryWatch: Afghanistan