Russian news agencies, citing the nation's Defense Ministry, say a Russian warship has seized a vessel with 29 suspected pirates on board off the coast of Somalia.

RIA Novosti and other agencies say a Russian anti-submarine vessel seized the ship on Tuesday along with automatic rifles, pistols and ammunition found on board.

The reports say a Russian tanker fended off an attack by the same group earlier Tuesday.

Russia and other nations patrol the region as part of an international effort to deter pirate hijackings in the busy shipping lane off the Somali coast.