The South Dakota Highway Patrol reports a second drug bust in just over a week on Interstate 90 at Chamberlain.

The patrol says 20 pounds of cocaine and three pounds of methamphetamine were found in a vehicle Thursday morning. It puts the estimated street value of the illegal drugs at $245,000.

The patrol says the discovery came after a trooper stopped a vehicle for a traffic violation.

Last week, the Highway Patrol said it found 22 pounds of marijuana in a vehicle during an I-90 traffic stop, also at Chamberlain.