"Chelsea" lodged an official complaint about the referee's behavior in the match against "Man Utd" © EuroFootball.com

London's "Chelsea" club filed an official complaint about the behavior of referee Mark Clattenburg during the English championship match with "Man Utd."

The representatives of the capital's team claim that the referee used "inappropriate words" and possibly insulted two footballers on racial grounds. One of them is the midfielder John Obi Mikel.

The match, which "Man Utd" won 3-2 after a dramatic battle, was full of emotions and incidents. "Chelsea" coach was particularly outraged by Clattenburg's decision to send off two players from the field within a 5-minute period - Branislav Ivanovic and Fernando Torres.

"It's a shame that the referee determined the outcome of the match," said manager Roberto Di Matteo. "I have no doubt that after watching the video he will understand how he made a mistake."

Furthermore, an investigation is ongoing regarding an injury to one of the officials maintaining order in the stadium. It is believed that they may have been injured by an object thrown from the stands.