Turkish security forces overpowered an assailant on Saturday some 12 hours after the hijacking of a passenger ferry by suspected Kurdish militants, Turkish broadcasters reported.

Earlier reports said up to five assailants had taken some 20 people hostage during a journey in the Sea of Marmara in northwest Turkey before the high-speed sea bus ran low on fuel and had to anchor west of Istanbul.

(Writing by Daren Butler; Editing by Louise Ireland)