At least one person was killed after an accident involving a ride at the Ohio State Fair on Wednesday, Fox News has confirmed.

As many as seven other people were hurt, one of them critically, Fox 28 reported, adding that the ride experienced a malfunction. The Ohio Highway Patrol told Fox News investigators were at the scene.

One of the injured is a 13-year-old girl, the news station added.

Some or all of the victims are reported to have been tossed from the ride, Battalion Chief Steve Martin said, according to The Columbus Dispatch. Crews shut down other rides at the fair.

Gov. John Kasich reacted: "I am terribly saddened by this accident, by the loss of life and that people were injured enjoying Ohio's fair. Our thoughts and prayers go out to those grieving and injured. I have ordered a full investigation into this incident and have ordered that all fair rides be shut down until additional safety inspections can be completed."

The incident was confirmed on the official Twitter account for the Ohio State Fair. “We are investigating and will report information as available,” the tweet said.

The cause was unclear. Recent storms and flooding forced inspectors to work long hours in recent days ensuring the rides were in good working shape, the Dispatch added.

“The rain slowed us down a little bit. Usually a lot of this stuff would be up a lot faster” inspector Ron Dean told the newspaper.

Wednesday marks the state fair's opening day.