About the abuse of buy-bust operations >>>

It is a matter of judicial notice that buy-bust operations are "susceptible to police abuse, the most notorious of which is its use as a tool for extortion."[16] The high possibility of abuse was precisely the reason why the procedural safeguards embodied in Section 21 of R.A. No. 9165 have been put up as a means to minimize, if not eradicate such abuse. The procedural safeguards not only protect the innocent from abuse and violation of their rights but also guide the law enforcers on ensuring the integrity of the evidence to be presented in court.

Precedents/Link/Source: 
[16] People v. Garcia, G.R. No. 173480, February 25, 2009, 580 SCRA 259, 267.

2017 Latest Application. READ Full Text.
[2017V205] PP vs Barte