Armed Maoists tonight forced police men to vacate a station and laid siege to it at Baipariguda in Orissa's Koraput district, about 530 km from Bhubaneswar.
A large number of ultras armed with sophisticated weapons surrounded the police station and laid siege to the building after asking the five police personnel present there to move out, police said.
It was immediately not clear whether the Maoists had taken the personnel hostage or caused them any harm, they said.
Director General of Police Manmohan Praharaj said a team of the elite anti-naxal Special Operation Group (SOG) rushed to Baipariguda, which is close to Maoist-infested Malkangiri district in south Orissa.
Additional police forces were rushed from the district
headquarter town of Koraput, about 25 km from Baipariguda,
However, force movement slowed as the ultras had put obstacles on roads by felling trees.