Same drug taken in an armed robbery in Pacific Grove in September.
Local narcotics officers have seen a major increase in the illicit use of Oxycontin, a synthetic opiate that produces a heroin-like high, police said.
Police conducted the operation Dec. 1 but didn’t announce the arrests until Thursday.
The one-day narcotics operation took place at several locations and involved “probation searches and an undercover officer,” he said.
Individuals arrested on drug charges were identified as Cristopher Balaban, 21, of Monterey; Charles Clifton, 22, of Monterey; Johnny Magallanez, 23, of Seaside; Michael Castaldo, 22, of Monterey; and Blake Davis, 22, of Pacific Grove, police said.