Suspected Maoists on Saturday attacked the party office of Communist Party of India-Marxists (CPI-M) in West Bengal's Nadia district, razing the building to ground, police said.
The incident took place at Poragachia under Kotwali police station area in Krishnanagar, about 125 km from Kolkata.
The Maoists torched the furniture and important party documents at the office and also left behind some of their posters and leaflets, the police said.
On August 8 two rifles were reportedly snatched from police personnel in Krishnanagar by Maoists, and soon after posters - urging people to join hands in Nandigram and Singur's anti-land acquisition movement - were also recovered from the same area.
Two days later, two rifles were snatched from the policemen in neighbouring Murshidabad district after which the police engaged in combing operations in both the districts. Villagers alleged that they were picked up at random and quizzed by the police officials.