A bus carrying 16 Indiana Tech men's and women's bowlers overturned in Southern Indiana on I-65 north of Louisville.  
School officials say about 20 people were on board. (Photos courtesy of WAVE-TV 3)

CLARK COUNTY, Ind. (WOWO): Police say 21 passengers on a bus carrying the Indiana Tech men's and women's bowling team have been injured after a tour bus flipped on Interstate 65 in Clark County Thursday morning.

No word on the extent of the injuries, but a media reports say none the injuries are believed to be life-threatening. According to WAVE-TV in Louisville, doctors are trying to determine if the bus driver had a medical condition sparking the crash.

The station is also reporting the bus was Fort Wayne-based Excursions Trailways.  

The roll-over occurred Thursday morning just before 11:00 a.m., on southbound I-65 just north of Henryville, Indiana.

Indiana Tech officials issued the following alert:

Campus Alert:

A bus carrying 16 members of our men’s and women’s bowling teams and coaching staff has been involved in an accident on the way to USBC Sectional Competition in Smyrna, TN. What we know at this time: Emergency responders are on the scene. No official information is yet available about condition of individual passengers. More information will be posted as soon as it becomes available. 

Scottie Maples of the Clark County Sheriff's Department says there are reports of “multiple injuries'' in the accident, but the extent of the injuries is unknown.

A Clark County sheriff's office dispatcher says a total of six medical choppers have been called to the scene, about 20 miles north of Louisville, Kentucky. Indiana State Police Trooper Mary Sanchez tells the News and Tribune that ground ambulances also were on the scene.

Video shows the white bus on its side in a grassy area off the highway with debris strewn about.