Between 1986 and 1988, the demand for a separate state of Gorkhaland and Kamtapur based on ethnic lines grew strong. Riots between the Gorkha National Liberation Front (GNLF) and the West Bengal government reached a stand-off after a forty-day strike. The town was virtually under siege, and the state government called in the Indian army to maintain law and order. This led to the formation of the Darjeeling Gorkha Hill Council, a body that was given semi-autonomous powers to govern the Darjeeling district, except the area under the Siliguri subdivision. Since 2007, the demand for a separate Gorkhaland state has been revived by the Gorkha Janmukti Morcha and its supporters in the Darjeeling hills. The Kamtapur People's Party and its supporters' movement for a separate Kamtapur state covering North Bengal have gained momentum.