REPORT ON INVESTIGATED KILLINGS IN RELATION TO THE ANTI-ILLEGAL DRUG CAMPAIGN Available PNP records described 80% of these incidents as buy-bust or sting operations (387 incidents). Other types of police operations noted were service of search warrants (50 incidents) and warrants of arrest (20 incidents); warrantless arrests (91 incidents); checkpoints (8 incidents); patrol (2 incidents); and stop and frisk (2 incidents). Officially, there were at least six incidents wherein victims were killed during custodial investigations or while in detention. CHR also noted that five percent of the police operations were described as part of Oplan Tokhang, one of the two prongs of the PNP’s anti-illegal drug campaign Project Double Barrel. 4.1. Use of necessary and sufficient force Graph 7. Killed and not killed nanlaban victims in law enforcement operations In similar phraseology, available police documents detailed the alleged aggression and provocation exhibited by the supposed targets of the drug operations. Such provocation would prompt the police’s use of firearms or force and would lead to the eventual killing of the targets. The Commission observed that the term neutralization (and its other permutations) has been used in police reports to describe incidents where the victims either died on the spot or later declared dead in a hospital. Police records revealed that at least 537 out of the 659 victims allegedly initiated aggression or resisted arrest (nanlaban). 10