For sure, the power of the police to issue subpoena will become another kind of racket to increase the unofficial income of the police officers. It will be used to intimidate the critics and opponents of the regime and to facilitate extortions and murders as in Oplan Tokhang.

http://newsinfo.inquirer.net/974069/duterte-signs-law-giving-pnp-power-to-issue-subpoena-duterte-pnp-subpoena-cidg-contempt