From Official Gazette:
Last Friday, former DILG Undersecretary Rico E. Puno submitted his letter of resignation to the President, through Executive Secretary Paquito Ochoa Jr. The President has accepted Mr. Puno’s resignation effective immediately.
Statement of Undersecretary Puno on his resignation, September 11, 2012
As Undersecretary for Peace and Order in the DILG, I am entrusted with duties and responsibilities that involve strict confidence, security and protocol. Violating the confidential nature of my duties may expose people to danger or jeopardize critical operations. Hence, I am duty-bound to act with restraint and circumspection, even when subjected to personal attacks in the mass media. This is why I have opted not to react to the speculative accusations that have been hurled against me by some media organizations.
This is the chronology of events that transpired on August 18 and 19, 2012 as I followed the orders of the President: