 A dissident group of Colombia's former FARC rebels has announced a unilateral ceasefire after a first round of negotiations with the Colombian government. The Segunda Mercatalia group also agreed to free those they hold captive. Weather forecasters are warning that a major hurricane may be about to hit the southeast Caribbean. The U.S. National Hurricane Center said Beryl is expected to bring heavy rains, flooding, strong winds and storm surges from Sunday night.