The bus crash that killed two people and injured 20 Wednesday was caused by the bus driver's aneurysm, according to the Star Tribune.
The announcement came from John Patton Jr., an attorney for the bus company, Friday.
The driver, 52-year old Edwin Erickson, lost control of the bus on Interstate 90 two miles west of Austin, MN and veered off the road. The bus was returning from a casino trip in Iowa.
Bold Lines Inc., the bus line that operates the bus in the crash, paid $20,000 in 2002 to settle an enforcement case over testing for drivers. The federal safety agency advised roadside inspections because of safety concerns, according to the Pioneer Press.