At least one person was killed as a mine left over from past wars went off in Afghanistan's eastern Ghazni province on Wednesday, a district police officer Mohammad Nasir said on Thursday.

A farmer was working in his farmland in Asghar Khil village of Moqar district on Wednesday afternoon when an explosive device left over from past wars exploded, killing the farmer on the spot, Nasir added.

A similar accident claimed the lives of three children and injured another in Wardak province last week.

Afghanistan reportedly is one of the most mine-contaminated countries globally as dozens of people, mostly children, are killed and maimed every month due to blasts of unexplosive ordinances left over from the past four decades of wars and civil strife.