WA Organised Crime Squad seize $25 million meth

A NSW's man has been charged after West Australian police seized $25 million worth of methamphetamine during a random traffic stop north-east of Perth.

Police Commissioner Chris Dawson says officers found 25 kilograms of meth, 280 grams of cocaine, a 9mm semi-automatic pistol, ammunition and about $13,500 in cash when they pulled over a car on Great Eastern Highway in Northam Wednesday.

"It's the trifecta, I call it often, in organised crime: drugs, money and firearms," Mr Dawson told 6PR radio.

The 43-year-old man will appear in Perth Magistrates Court on Thursday.