The raid took place on the houses of three repeat drug offenders.
Officials say they found an arsenal of drugs and a gun at two of the houses but didn't find anything at the third house.
All four suspects, who were not identified, face a wide variety of drug charges. Police say one man also faces an unlawful possession of a fire arm charge.
This was the seventh drug raid officers have made in the past three months a more raids are expected in the coming days.