Police have arrested a woman for allegedly operating an illegal brothel at a residence in St Albans.

Officers from the Public Order Response Team and Sex Industry Co-ordination Unit attended two addresses in Mintaro Way, Seabrook and Alfrieda Street, St Albans about 7.25pm on Thursday night (Aug. 13).

The warrants were executed as part of Operation Kokomo, an ongoing investigation into alleged contraventions of the Sex Work Act at the St Albans premises which has been running since July.

A 44-year-old woman was arrested at the Seabrook address, she was interviewed and released pending further enquiries.

Police located several people at the St Albans premises including two women who were both issued a formal warning and several males.

Three of the men in attendance, a 32-year-old Thornhill man, a 26-year-old Delahey man and a 50-year-old Keilor Downs man were all found to be in breach of the directions of the Chief Health Officer.

They each received a fine of $1652.

The investigation remains ongoing.