The live ordnance detonated in the first district of Farah city in Afghanistan's western Farah province, Khaama Press reported.
Provincial government spokesman Abdul Rahman Zhwandai said the victims of the incident were small children who searching for metal scraps when the explosion happened.
Zhwandai said the unexploded bomb was left from civil war times.
Mena Suvari shares her delightfully awkward Christmas card photo
Ohio crash that killed two caught on camera [VIDEO]