SALT LAKE CITY (AP) — A youth football coach struck a 13-year-old player from an opposing team near the sideline during the fourth quarter of a tied game, giving the boy a concussion and outraging parents and spectators, a Utah police sergeant said Wednesday.

Police arrested Nathan Harris for investigation of felony child abuse after watching grainy video and talking to witnesses about Saturday’s incident in Payson, about 60 miles south of Salt Lake City.

“As the 13-year-old ran down, Mr. Harris stepped out and hit him with his forearm under his chin,” police Sgt. Lance Smith said. “And then Mr. Harris stepped back and just stood there.”

Referee David Durrant said the boy looked like he was about to go out of bounds — or had just gotten out of bounds — when he was hit near the sideline of the visiting team.

“It looked like the coach had a lot of time to move, he didn’t move, and he stood there and delivered a blow,” Durrant said.

Durrant threw a penalty flag and ejected Harris.

The incident was an accident and there was no malice behind Harris’ actions, attorney Dean Zabriskie said. He said police have relied too heavily on witnesses who were standing far away and the video — which was shot from the opposite sidelines — shows Harris wasn’t too close to the field and appears to show the coach stepping backward as players came toward him.

Also, it looks like a player who was pursuing the 13-year-old had some contact that pushed the boy toward Harris, he said.

“It seems to me like a tempest in a teapot,” Zabriskie said.

Harris, a volunteer assistant whose son was also playing in the game, was arrested Monday and posted $5,000 bail on Tuesday. The Utah County Attorney’s office will decide whether to file charges.

Police said the boy was expected to miss a month of playing time. His team won in overtime with a field goal, Durrant said.

(© Copyright 2012 The Associated Press. All Rights Reserved. This material may not be published, broadcast, rewritten or redistributed.)