The cause of a fatal Minnesota bus crash may be due to the fact that the bus driver suffered from an aneurysm bursting in his chest while he was driving.
The AP reports that the crash occurred on the Strain Bus Line which was operating a tour bus to an Iowa casino.
The bus driver, Ed Erickson was driving the bus on a clear Wednesday afternoon on Interstate 90 near Austin, Minn. when he lost consciousness due to the chest aneurysm before the crash occurred. The bus actually crossed over the median dividing the highway from the eastbound lane it was traveling in. The bus made it all the way into westbound lanes before it ended up in a ditch.
A video that details the crash can be viewed here:

