Nine ‘Brothers For Life’ gang associates have been arrested in southwestern Sydney, with police seizing drugs, weapons and cash during a series of raids.

Police executed a number of search warrants in Sydney’s southwest early on Tuesday morning following an investigation by Strike force Longdown and announced the arrests on Wednesday.

Bankstown Local Area Commander, Superintendent Dave Eardley says the arrests would seriously disrupt the activities of an alleged drug supply operation.

“We will allege in court that the men arrested today are associates of the ‘Brothers For Life’ gang, and are involved in the supply of illegal drugs in and around Bankstown and other southwestern Sydney suburbs,” Superintendent Eardley said in a statement.

At a Yagoona property, officers located and seized cocaine, crystal methylamphetamine, cash and steroids.

At a Villawood property, police arrested a 20-year-old man and seized a shotgun, an ammunition press (allegedly used to make ammunition), MDMA tablets, crystal meth and tear-gas canisters.

Police also seized cannabis, steroids, cash and electronic equipment from other locations during the operation.

Three of the men have been refused bail. All will appear in various courts in the new year.

Strike Force Longdown will continue over the coming months.

Police will hold a media conference on Wednesday afternoon.