WALLA WALLA—Walla Walla Police Detectives have been working a several months' long drug investigation resulting in the arrest of 21-year-old Efren Alejandro Serrano. On November 20, police arrested Serrano on charges of forgery stemming from a separate investigation and served a drug related search warrant at his residence in the 100 block of E. Maple Street. Detectives recovered fentanyl “mexi” pills, oxycodone, methadone, methamphetamine, psilocybin mushrooms, along with a substantial amount of cash from inside the residence. Detectives also recovered stolen property and four firearms, two of which were confirmed as stolen. At the time of arrest, Serrano was in immediate possession of a large amount of cash and fentanyl pills. The charge of forgery stems from a separate investigation that involved Serrano passing a counterfeit bill. This is great news for the community and police as nearly 200 fentanyl pills were taken off the street. Serrano was arrested on the following charges: possession of stolen firearm, possession with intent to deliver schedule II - Fentanyl, possession with intent to deliver schedule II - Methamphetamine, possession of schedule II - Oxycodone, possession of schedule I - Psilocybin, and possession of drug paraphernalia.