Mamata Banerjee has won a point she made yesterday against the Centre, with the High Court agreeing that paramilitary forces cannot be withdrawn at this moment from the trouble-torn Darjeeling hills of Bengal. The court today put a freeze on the Centre's plans to withdraw seven of the 15 companies of paramilitary forces that have been stationed in the hills since June, saying there must be a "good reason" for both deployment and pullout of troops.