The driver of a semi that jackknifed near Eau Claire causing a crash that killed five people was operating the rig with a suspended license.
County records in Indianapolis show Michael Kozlowski's license was suspended last month for failing to pay a speeding ticket issued in April.
Marion County records show Kozlowski sent in a check to pay a $150 fine, but it bounced and his license remained suspended.
Indiana state records show the 22-year-old driver received his commercial license last February.
Kozlowski is from Highland, Indiana. His rig left Interstate 94 at Osseo about 2:30 a-m Sunday, traveled several hundred feet on the shoulder, then rolled over and jackknifed. A charter bus carrying the Chippewa Falls marching band then slammed into the overturned truck.
The State Patrol says the National Transportation Safety Board will look at the records of both drivers, their logs and at both vehicles. The bus driver was 78-year-old Paul Rasmus of Chippewa Falls. He was killed in the crash along with the director of the Chippewa Falls High School band director, his wife and eleven-year-old granddaughter and a student teacher.
They were on the first of four buses carrying about 200 students and 40 adult teachers and chaperones from a marching band competition at U-W Whitewater.