Criminal investigation opened against Russian Federation internationals Aleksandr Kokorin Pavel Mamaev

Aleksandr Kokorin and Pavel Mamaev are under criminal investigation in Russia

Aleksandr Kokorin and Pavel Mamaev are under criminal investigation in Russia

Zenit St Petersburg's Aleksandr Kokorin and Krasnodar's Pavel Mamaev are said to have attacked trade ministry official Denis Pak on Monday, leaving him needing medical treatment.

The duo was filmed attacking Pak with a chair in an upscale Moscow café.

The pair have also been accused of being involved in an attack on a Moscow driver in the hours before the cafe incident, which police in the Russian capital are also reportedly investigating.

Russia's interior ministry has opened an investigation into the assault.

The Interior Ministry confirmed that an "investigation is now establishing all the circumstances of and participants in the incident".

The Russian Premier League said in a statement: "This incident casts a shadow over FC Zenit and FC Krasnodar, but over the whole of Russian football".

Kokorin helped Zenit knock Celtic out of the Europa League in February 2018
Kokorin helped Zenit knock Celtic out of the Europa League in February 2018

"We await the legal assessment by the relevant bodies, but from the human and emotional viewpoint such an incident only arouses shame".

"We don't think it's necessary to speak of a club punishment for the player - it will come, but right now the management of Zenit and the fans feel nothing but dismay, that one of the country's most talented footballers has behaved disgustingly".

The club statement read: "What we have seen in the video is outrageous". The club said it will "do everything" it can to tear up his contract. "The first thing we can do is apply all possible sanctions specified in the contract". We will give the player the maximum fine and remove him from first team training sessions.

"At the moment, we are studying how to break a contract with a player. But we will do everything to achieve this".

The 27-year-old Korokin has 48 caps for Russia's national team, but was not part of the team that made the quarterfinals of this year's World Cup on home soil, missing out through injury.

Both players have represented their country, with 63 Russian Federation caps between them, but Mamaev last played at worldwide during Euro 2016.