A Joint Secretary-rank officer in the Cabinet Secretariat has been found guilty of leaking Army Chief General V K Singh's letter to Prime Minister Manmohan Singh about the poor state of preparedness of his force and has been shunted out. A probe into the leakage by the Prime Minister's Office (PMO) has also cleared Gen Singh of any wrongdoing in the episode, highly-placed sources said. In his letter, the Army Chief had highlighted the critical shortage of equipment and ammunition in artillery and armoured regiments. The female officer belonging to the Indian Economic Service (IES) was handling the charge of intelligence agencies under the Cabinet Secretariat and was nailed after interrogation of some suspected persons, they said.