West Coast Police have arrested three people in relation to the sale and supply of meth

Search warrants were executed today as part of Operation Joaquin, three in Greymouth and one in Christchurch.

Meth, cannabis, cash and a loaded sawn-off firearm were seized.

Two men and one woman have been arrested on multiple charges, including conspiracy to supply methamphetamine.

Acting Detective Senior Sergeant Lex Bruning says they want to send a clear message such criminal activity and illegal firearms won't be tolerated.