Maoist guerrillas have attacked a bus packed with around 150 supporters of West Bengal's ruling Communist Party of India-Marxist (CPI-M) in West Midnapore district.
Of the 155 passengers, two were injured while 60 have returned home, police said. The police were clueless about the other missing passengers. The bus was returning from a rally of Chief Minister Buddhadeb Bhattacharya late Monday.
The incident occurred between Ramgarh and Kantapahari area in West Midnapore, an insurgency hit district of West Bengal, the police said.
One CPI-M worker received bullet injuries in his head while another sustained a leg injury, police said. Both were admitted to hospital.
The attackers shouted slogans and fired at the bus and hurled crude bombs, police said, adding most passengers fled. Maoist posters were recovered from the spot.