Police say they have smashed a drug ring with links to Nigeria that has been operating in Sydney and Adelaide.
Eight men have been arrested over the syndicate, which police say had been importing and selling drugs.
Detectives say the group has sold four kilograms of ice and heroin to undercover police officers since September.
Four of the men met an undercover officer yesterday afternoon to allegedly sell him ice in a hotel car park at Bankstown, in Sydney's south-west.
Heavily armed officers from the Tactical Operations Unit then swooped.
Detective Inspector Steve Patton says the four men, aged between 37 and 47, have been charged with commercial-scale drug supply.
"The men were in possession of two kilograms of methylamphetamine," he said.
"One of them was arrested a short distance away after a short pursuit. He drove the car out of the car park and across a couple of lanes of traffic quite erratically, before crashing through two fences into someone's front yard.
"He fled on foot and, after a chase that lasted about 10 minutes, he was arrested not too far away."
Detectives then raided two addressed in Adelaide last night, including the home of one of the arrested men.
This morning police executed more search warrants in Sydney, at Riverwood, Bexley, Granville, Chiswick and Quakers Hill.
A further three men, aged 42, 43, and 45, were arrested in those raids.
Police expect the men will also be charged with large-scale drug supply.
An eighth man turned himself in to police this afternoon.
