Kyle Shanahan (far left) and other Redskins coaches argue with an official during the Week 2 game in St. Louis (John McDonnell/The Washington Post)

Updated: 1:28 p.m.

The NFL will review an incident at the end of the Washington Redskins’ loss Sunday to the Cincinnati Bengals when Redskins offensive coordinator Kyle Shanahan  berated a replacement official during and after the game.

The league wants to determine precisely what happened and whether a fine of Shanahan is warranted, according to Greg Aiello, the NFL’s senior vice president of communications.

“The Kyle Shanahan incident will be reviewed…. Finding out exactly what happened is part of the review so we can’t comment on [the details of the incident as reported to the league office] right now,” Aiello said.

The Redskins offensive coordinator issued a statement Monday acknowledging that the team was assessed a penalty because of his actions and that he must  “handle those situations better in the future. My emotions got the best of me and I know it’s my responsibility. This will never happen again.”

 The Redskins received the unsportsmanlike conduct penalty in the final seconds of their 38-31 defeat to the Bengals at FedEx Field Sunday. The officials did not specify that the penalty was called on Shanahan. But according to several people standing on the field near the incident, Shanahan was screaming at the official who threw the flag and, after the game was over, chased the same official and continued to profanely criticize him.

The Redskins did not make Kyle Shanahan available to speak to reporters after the game.

In his written statement, issued through thte team, Shanahan said he conducted himself “in the wrong way” and his emotions “got the best” of him.

“When I overheard the official tell the head coach that the game was over after the false start penalty, I tried to explain that the game was not over,” Shanahan, the son of Redskins Coach Mike Shanahan, said.  “That is what resulted in the unsportsmanlike conduct penalty. I tried to get an explanation of how I could get that penalty when half of the other team was on the field as well.

“I was frustrated, and in the process of trying to get some answers from the officials, I conducted myself in the wrong way.”

It does not appear the league is considering a suspension against Kyle Shanahan. Only a fine is under consideration, it appears.

“I ask our players to hold themselves to a high standard and be accountable and I know that I’m accountable for my actions as well,” Shanahan said in his written statement.

The NFL also will review an incident Sunday night in which New England Patriots Coach Bill Belichick made contact with a replacement official, according to reports.

The incidents occurred after the league office recently sent a memo to teams instructing coaches to treat the replacement officials respectfully.