Government workers on Monday resumed offshore work off the coast of Nago, Okinawa Prefecture, to build the replacement facility for U.S. Marine Corps Air Station Futenma as protesters gathered to halt the project.

Some 100 protesters started gathering at dawn in front of the gate of Camp Schwab next to a site for reclamation work to block construction vehicles from entering.

At around 9:30 a.m., riot police tried to remove protesters sitting in front of the gate with their arms crossed.