CBS News reports that a man has been arrested in Minnesota after throwing a boy off a 31-foot waterslide. The 18-year-old suspect, Roman Adams, is accused of picking up an 8-year-old boy and throwing him over the waterslide platform. Authorities state he was irritated because the line was taking too long.

The incident occurred at the Apple Valley Aquatic Center, which says they’ve never had an incident of this magnitude happen before.

Authorities stated that Adams was at the park with a personal care assistant who was not in line with him. Adams has cognitive disabilities. They are now trying to determine if Adams knew what he did was wrong.

The victim survived the fall, but suffered multiple broken bones.

Adams has been charged with third-degree felony assault, and his mental state may affect how the prosecutor proceeds with the case.

*Photo credit CBS Interactive Inc.