The attack late Sunday occurred in Diraz, west of the capital Manama, the ministry said on its Twitter account.
Witnesses said they heard a loud blast near the home of revered Shiite cleric Sheikh Isa Qassim, where five people were killed last month when security forces opened fire to disperse a sit-in.
Police blocked all entries into the village after the bombing, witnesses said, adding security forces have been maintaining a cordon around Sheikh Qassim's house since the protest dispersal.
Sheikh Isa Qassim is considered to be the spiritual leader of Bahrain's majority Shiite community.
A court last year stripped him of his citizenship, sparking repeated sit-ins outside his residence in Diraz.
