The cause of the fire or casualties due to it are yet to be ascertained and investigations are on.
Of the houses that were gutted, one belonged to Dinesh Thing, believed to be a close associate of Gurung.
The Gorkha Janmukti Morcha (GJM) chief's house escaped the fire but was vandalised, locals said.
The police claimed that the houses were set ablaze by Gurung's supporters to wipe out evidence.
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Restrictions have been imposed on entry to the village, a Gurung stronghold, and police are conducting raids in the area.
Gurung has been on the run since August after the West Bengal government lodged cases against him under the Unlawful Activities (Prevention) Act for his alleged involvement in several bomb blasts in Darjeeling and adjoining areas.
Additional Director General of Police Siddhinath Gupta said the state police had asked its Sikkim counterpart to intimate them about anyone entering the north-eastern state from Bengal with injuries.
The police had gone to the area looking for Gurung, following a specific information that the GJM supremo and those loyal to him were hiding there.
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