A double-decker tour bus carrying 50 to 60 passengers flipped on to its side early Tuesday morning in Indiana. Authorities say six to eight people were seriously injured and 20 to 25 suffered moderate to minor injuries. The crash occurred at 4:30 a.m. on Interstate 65 when the driver attempted to swerve to avoid an accident that occurred about 10 minutes earlier, according to State Police Sgt. Shawn O’Keefe. The roads were also slick from overnight storms, making the driving more treacherous. “The driver apparently didn’t see it because of the rain or something and swerved to avoid it. The bus driver swerved and ended up turning the bus over on its side and it went into the median,” said O’Keefe. Police have not confirmed who owned the bus, but its destination board said it was headed for Chicago.