Dandenong Divisional Response Unit officers arrested three people and seized cash and drugs in Cranbourne North on Wednesday, 22 August evening.
Police, with the assistance of the Critical Incident Response Team, executed a warrant at a house on Rosebank Drive about 5pm.
More than $100,000 cash, a large quantity of methamphetamine and a firearm were seized.
Two men aged 34 and 30 and a 32-year-old woman, all from Cranbourne North, are currently assisting police with their enquiries.
Anyone with information is urged to contact Crime Stoppers on 1800 333 000 or visit www.crimestoppersvic.com.au
