MANAGUA, Nicaragua (AP) - At least 300 families have been isolated in the mountains of Nicaragua's remote north Atlantic region since Hurricane Felix destroyed all roads into their communities, government officials said Sunday. Word reached the capital after several villagers hiked three days through forests and over mountains to find help, the civil protection agency said in a news release. Trapped residents of the three communities near the city of Bonanza, about 280 kilometers ( 180 miles) north of the capital, Managua, are in need of food, water, medicine, clothing and blankets, according to the villagers, who also told authorities that numerous children are ill. The total number of people living in the communities was unclear. Bonanza Mayor Manuel Sevilla told Channel 8 television Sunday that the hurricane had destroyed numerous banana plantations, citrus trees, and corn and rice crops in the region. Sevilla asked the government to deliver aid by helicopter. In addition to affecting the mountainous region, Felix devastated remote jungle beaches and communities along the Miskito coastline when it struck Tuesday as a Category 5 hurricane. The death toll from Felix has ranged from 49 to more than 100, but no one has been able to tally the missing. 092239 sep 07GMT