The drugs were bound for the Twin Cities.

Two Minnesotans have been arrested in South Dakota after traffic cops pulled them over on Interstate 90.

The Pennington County Sheriff's Office said it made the stop on Thursday, pulling over a speeding, eastbound Toyota Tundra.

Officers noted a smell of marijuana from the two men inside, one a 50 year old from Minneapolis and the other a 41 year old from St. Paul.

Further investigation of the vehicle uncovered 85 pounds of marijuana in the vehicle.

They've been arrested and are facing charges of possession with intent to supply marijuana.

It's the latest in a string of drug hauls by police in the Dakotas who have been intercepting marijuana and other drugs bound for Minnesota.

Drug runners are seeking to avoid more heavily monitored southern trade routes in favor of the Dakotas, though police in those states have been having success after stepping up patrols, with hauls worth millions of dollars in recent months.