Perth police nab 21kg of meth in raid

Stopping two drivers who appeared to be doing a drug deal in Perth's northern suburbs has led police to about $21 million worth of methamphetamine.

After searching the vehicles and seizing 11 kilograms of meth along with almost $100,000 in cash, police moved onto a Karrinyup property and found a further 10kg of the drug.

Five people from Perth, NSW and Queensland have been charged over the haul, which is the biggest meth seizure in WA this year.