The Trinamool leaders are to visit the Lalgarh police station and some of the villages in the area.

Roy and Adhikari had allegedly been obstructed by the state's ruling Communist Party of India-Marxist (CPI-M) activists last month when they were proceeding to two troubled areas in this belt.

The security operation was launched in and around Lalgarh last month after Maoists torched police camps and drove away the police and civil administration to establish a virtual free zone in the region since last November.

Lalgarh has been on the boil since November when a landmine exploded on the route of the convoy of Chief Minister Buddhadeb Bhattacharjee and then central ministers Ram Vilas Paswan and Jitin Prasada.

Complaining of police atrocities after the blast, angry tribals backed by Maoists launched an agitation, virtually cutting off the area from the rest of West Midnapore district.

Maoists are active in areas under 21 police stations in the state's three western districts - West Midnapore, Bankura and Purulia.