Union Home Minister Rajnath Singh on Tuesday assured early solution to the Chitmahal issue along Indo-Bangladesh border in North Bengal. As he inspected the Teen Bigha corridor in Cooch Behar district Chief Minister Mamata Banerjee frowned at the timing of his visit, which she said had political purpose behind it. Singh, who was being accompanied by Darjeeling MP SS Ahluwalia, became the first Indian Minister to visit Chitmahal. He is on a two-day visit of Bengal during the course of which he would visit the BSF outposts on the Indo-Bangladesh border. He is likely to visit the floating border outposts near Sunderbans.