The officials further added, the incident took place on Tuesday in Marjah district, killing at least five people and injuring five others.
No group has so far claimed responsibility behind the incident.
Local authorities blame Taliban group for the incident as the Taliban fighters frequently use improvised explosive device to target Afghan and coalition security forces which normally leads to civilian casualties.
This comes as at least 9 civilians were killed and over 20 others were injured following a roadside bomb blast in Wardak province on Monday.
The United Nations office in Afghanistan also expressed concerns regarding civilians deaths in Afghanistan which shows an increase of during the first three months of 2013 as compared to the similar period last year.