MINNEAPOLIS — It’s been a month since a tour bus crash in southern Minnesota killed two and injured 20, and Freeborn County prosecutors are considering the evidence.

State Patrol spokesman Capt. Matt Langer says Thursday his department’s investigators have nearly completed their work and forwarded along nearly all of their evidence.

The Patrol reports that on Nov. 18 the bus was five miles west of Austin on Interstate 90 when it crossed the centerline, hit a ditch and rolled on its right side.

Officials from the bus company say the 52-year-old driver suffered a ruptured aneurysm just before the crash as he drove mostly older passengers home from a day trip to an Iowa casino.

The owners of the bus have said there were no maintenance issues with it.