A bomb blast in a village in Bahrain, the scene of simmering unrest since anti-government protests were crushed in 2011, has left three policemen slightly wounded, officials said.
The three were on patrol in the village of Bani Jamra, where many Shiites lives, when the blast occurred, the Gulf kingdom's interior ministry said in a statement on Twitter posted late Friday.
It said that the three sustained minor injuries, describing the explosion as a "terrorist" blast and adding that "necessary steps are being taken", without elaborating.
Witnesses said that the blast occurred late Friday and that security forces swiftly sealed off the village, which lies not far from the capital Manama.
They added that a young protester was also injured in clashes with police in another Shiite-majority village, Sanabes, late on Friday.
Attacks against security forces have intensified this year. Two people, including a Jordanian policeman, were killed in the area last week.
It was the first deadly attack on security forces since parliamentary polls in November boycotted by the main Shiite opposition group, which is calling for democratic reforms in the Sunni-ruled kingdom.
The election was the first in the Gulf state since authorities quelled the 2011 protests.
Bahrain, home to the US Navy's Fifth Fleet, remains deeply divided three years after the month-long demonstrations.
Protests still frequently break out in Shiite-majority villages in the country, sometimes sparking clashes with police.
Attacks on the security forces have increased this year, with three policemen - including an Emirati - killed in a bombing in a Shiite-majority area on 3 March.
Another policeman was killed in a bomb blast in a Shiite-majority village in February during protests marking the third anniversary of the failed uprising.