Updated

Bahrain says twin attacks have left a policeman dead and three injured in the latest sign of targeted strikes by anti-government factions in the restive Gulf nation.

Bahrain's 29-month uprising is dominated by street clashes between mostly Shiite protesters and security forces for the Sunni-led monarchy. But homemade explosives and firebombs have increasingly been used in ambush-style attacks against police.

More than 60 people have died in unrest since Bahrain's majority Shiites renewed demonstrations for a greater political voice.

The official Bahrain News Agency said Sunday a bombing killed a policeman in the Shiite-dominated area of Sitra.

Later, the Interior Ministry said three policemen were injured when their patrol was hit by firebombs in another area of the strategic kingdom, which is home to the U.S. Navy's 5th Fleet.