MANAMA, Bahrain (AP) — A Bahrain opposition party and authorities say a 17-year-old has been killed in clashes with security forces.

The death could bring fresh protests by Shiite-led groups seeking a greater political voice in the Sunni-ruled Gulf kingdom.

More than 50 people have died, including protesters and police, in almost 20 months of near-nonstop unrest in the strategic island nation, which is home to the U.S. Navy’s 5th Fleet.

Saturday’s statement from the political bloc Al Wefaq say security forces killed the boy the previous day during street clashes in Sadad village, southwest of the capital Manama, without providing details.

Bahrain’s Interior Ministry confirmed one person was killed in what it described as a “terror act” that included firebombs hurled at police.