KINGMAN, Ariz. -
A tour bus crashed in northwest Arizona late Friday night, killing the driver and injuring at lest four passengers.
The Arizona Highway Patrol says about 45 of 60 passengers on the bus were injured, but not all of them are requiring hospital treatment.
The four to five seriously injured were flown to hospitals.
The patrol says the crash occurred shortly before 8 p.m. local time on Highway 93, about 20 miles south of Hoover Dam, about 40 miles southeast of Las Vegas.
The bus was northbound when it went off the road. No other vehicles were involved.
The patrol says officers believe the driver had some sort of medical condition that contributed to the crash.
The bush crashed in the same area where another tour bus crashed three years ago, killing seven Chinese tourists.