A court in Moscow has ordered that Russia internationals Aleksandr Kokorin and Pavel Mamaev must be remanded in custody until Feb. 8 after they were charged with hooliganism over two violent attacks in Moscow in October.
Zenit St Petersburg forward Kokorin and Krasnodar midfielder Mamaev could face jail over the attacks, which were captured on CCTV on Oct. 8. They were orginally to have been held in custody until Dec. 8.
Footage circulated by Russian media showed a man being kicked and punched by a group of people and another incident in which two civil servants appeared to be assaulted in a cafe.
The two footballers were present at both incidents.
Russian news agency TASS reported that Kokorin and Mamayev had their custody extended because of "the gravity of the offence and the possibility that they could abscond during the investigation."
Kokorin's younger brother Kirill and Alexander Protasovitsky, also defendants in the case, will also be detained until Feb. 8.
Kokorin missed the World Cup in his home country with a knee injury, while Mamaev was not included in the national squad for the tournament.