MOSCOW (REUTERS) - Chechen side Terek Grozny could face stiff penalties from the Russian FA after officials insulted the referee following Sunday's 0-0 draw with Rubin Kazan, with the stadium announcer labelling him a "donkey".

The FA's disciplinary committee has scheduled a hearing on Wednesday to discuss the consequences of the events in Grozny.

Chechnya's strongman Ramzan Kadyrov, who serves as Terek's honorary president, called Fifa referee Mikhail Vilkov a"sellout" after he sent off Rizvan Utsyev late in the game and continued the criticism in what was meant to be an apology.

"I want to apologise to the entire football world for my remarks but not to the referee," the Kremlin-backed Kadyrov said in comments posted on the Internet.

"It was a terrible game because the referee was biased. He did everything possible to change the outcome of the match."