Indianapolis ? A van carrying Amish on an interstate highway veered out of control, overturned and ejected most of its passengers Sunday, killing five people and injuring 11, authorities said.

Two adults and three children were killed when the southbound van veered onto the grassy median, flipped over and came to rest in the northbound lanes of the highway about 50 miles northeast of Indianapolis, State Police Sgt. Rod Russell said.

No other vehicles were involved in the crash, he said.

The condition and ages of the injured were unclear Sunday evening.

Some of the victims hailed from an Amish community in the Fort Wayne area, about 50 miles to the northeast. Authorities were trying to verify whether some victims came from other Amish communities across Indiana.

“We do believe that some were Amish,” Russell said.

Amish people generally shun modern conveniences but sometimes enlist non-Amish as drivers.