An improvised explosive device killed an Afghan soldier and wounded 12 others in the central province of Oruzgan, where a suspected militant died in a separate clash, the US military said Saturday. "An improvised explosive device was detonated on Wednesday in the province of Oruzgan, killing one Afghan National Army soldier," US military spokesman Major Mark McCann told AFP. Twelve other soldiers were wounded in the incident, he added. On Friday one American unit was attacked in the same province by three militiamen. "As a result one militant was wounded and later died of his wounds," the spokesman said.