Karnataka Congress president D K Shivakumar on Wednesday asked Chief Minister Basavaraj Bommai to immediately lead an all- party delegation to the Centre on the border dispute with Maharashtra, as he accused him of doing a "lip service with hollow statements" on the issue. Reacting to Bommai's statement that Karnataka will not cede even an inch of land to Maharashtra, he urged Union Home Minister Amit Shah to give a public assurance on the matter.