ADAMS COUNTY, Colo. (CBS4) – The Adams County Sheriff’s Office says four people were arrested on Wednesday in a large-scale drugs and firearms bust. Investigators part of the North Metro Task Force Drug Task Force says more than 40,000 Fentanyl pills and 20 pounds of cocaine were seized.

(credit: Adams County Sheriff’s Office)

Investigators say they received information regarding a shipment containing illegal narcotics. The shipment was sent to a location which was under investigation for several weeks, they stated in a news release.

(credit: Adams County Sheriff’s Office)

The sheriff’s office released photos of the drugs, which included more than three pound of heroin, 9 pounds of meth and $113,000 in cash. In addition, investigators found four long guns, two handguns, body armor, a homemade silencer and three hand grenades.

(credit: Adams County Sheriff’s Office)

(credit: Adams County Sheriff’s Office)

Law enforcement seized the drugs and guns after serving a search warrant. The four suspects were booked on various felony charges.