Maoist rebels killed six people, including two policemen in a brazen assault on a police station, in separate attacks in restive eastern India, police said Monday. Communist guerrillas ordered four men out of their homes and then shot them dead in a late-night attack on Jhargram village in West Bengal state, said police official Surojit Kar Purkayastha. The rebels fled after killing the men, who were supporters of the state's ruling Communist Party of India (Marxist), Purkayastha was quoted as saying by the Associated Press. In neighboring Jharkhand state, two policemen were killed early Monday when scores of armed rebels attacked a police station in Bhejji village, a police official said. On Sunday, the rebels called a 48-hour general strike in seven eastern Indian states, and blew up a 3-foot (1-meter) section of railway track that disrupted train services across the region, said police official R.K. Mallick in nearby Chattisgarh state. Prime Minister Manmohan Singh has called the rebels the country's biggest internal security threat. They are now present in 20 of India's 28 states and have an estimated 10,000 to 20,000 fighters, according to the Home Ministry.