RAPID CITY - Rapid City police say they have busted a major local drug trafficking and money counterfeiting operation.

The investigation began with the search of vehicle that was pulled over early Monday and ended with the searches of two homes, a motel room and a tattoo parlor. Officers confiscated $56,000 in cash, more than a dozen rifles and handguns, counterfeit money and equipment used to make it, and illegal drugs including methamphetamine, cocaine and marijuana.

Authorities say they found traces of cocaine in the vehicle, and search warrants led to more search warrants. Four people have been arrested on drug charges. Charges related to the alleged counterfeiting operation are pending.

Copyright 2013 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.