PHOENIXVILLE, Pa. (WPVI) — Five people have been arrested in connection with a drug-trafficking organization, the Chester County District Attorney’s Office announced Tuesday.

Philadelphia residents David Arroyo, 27, Miguel Jorge-Ortiz, 35, Neil Perez, 29, and Jose Guzman, 49, are charged with corrupt organizations, conspiracy and possession with intent to deliver.

Curtis Lake, 50, also of Philadelphia, was arrested at a later date and charged with drug delivery resulting in death, corrupt organization and other related charges.

The DA’s office said the investigation began after heroin/fentanyl with the “Bad Bunny” stamp was found at the scene of an overdose death in Phoenixville, Pa. last year.

After a lengthy investigation, a total of 12 search warrants were executed on September 13 at nine different locations and three vehicles.

Police seized 1.5 kilograms of bulk fentanyl, 2 kilograms of bulk cocaine, $25,000 in cash, 2 assault rifles, 3 handguns and over 1,500 baggies of packaged fentanyl.

All five suspects will have preliminary hearings next month.