The home-guard was set on fire at Prakriyathong by unidentified people, police said, adding he was hospitalised.
A forest bungalow at Takdha, where West Bengal Chief Minister Mamata Banerjee had put up during a visit to Darjeeling on January 9 this year was burnt down last night, the sources said.
A truck and an SUV were torched at Mongpo, while police booths, which were not in use at Ranglirangliyat and Rangamancha, were set ablaze last night, the sources said.
He said that the indefinite bandh could be relaxed for a day or two for which GJM President Bimal Gurung would be consulted.
Superintendent of Police Kunal Agarwal said that one company of the CRPF arrived yesterday and four more battalions would arrive in the hills.
Besides the CRPF, there were two battalions of the Indian Reserve Force, five battalions of the riot police and seven battalions of the Rapid Action Force stationed in the hills.