GC Murmu, the Lieutenant-Governor of Jammu Kashmir, is the front-runner for the post of the country's new auditor, NDTV has learnt. Sources said Mr Murmu has already resigned his post in Jammu and Kashmir and a hunt is on for his successor. The post of the Comptroller and Auditor General, meanwhile, is expected to fall vacant this week as incumbent Rajiv Mehrishi turns 65. The Comptroller and Auditor General is a constitutional post and cannot be left vacant.