At least 100,000 villagers in eastern India have been forced to flee their homes in spiraling violence spurred by a state-backed anti-Maoist vigilante group, a US-based rights group said Tuesday. Human Rights Watch accused government forces of taking part in some of the violence, in which vigilantes allegedly attacked and killed supporters of banned left-wing rebels in the Maoist heartland of Chhattisgarh state. The rights group is calling for the state government to immediately end its support of the vigilantes and investigate rights abuses by its forces, as well as protect villagers who want to return home.