The government has denied a news agency report that a senior officer in the Cabinet Secretariat was responsible for the leakage of Army Chief Gen VK Singh's confidential letter to Prime Minister Dr Manmohan Singh on shortage of equipment and ammunition. An official release said in New Delhi last night that the report is completely baseless. Referring to an IB inquiry, PTI had yesterday reported that a Joint Secretary-level officer in the Cabinet Secretariat was responsible for the leakage of the Army Chief's top secret letter to the Prime Minister which led to an uproar in Parliament over a month back.