OSAKA — The outcome of Sunday's key election for the municipal assembly in Nago, Okinawa Prefecture, may create further doubts that the agreement between Japan and the United States to move the Futenma base to the city's Henoko district will be carried out.

Opponents of relocating the Futenma base achieved a major victory, winning a majority in the assembly.

The results announced early Monday showed 16 seats were won by candidates supported by Mayor Susumu Inamine, who strongly opposes relocation of Futenma to Henoko. Another two winners unaffiliated with Inamine have also indicated they are opposed.