Russian champions Spartak Moscow were charged by UEFA on Thursday after a fan fired a flare at the referee during a Champions League match.
UEFA said its disciplinary panel will judge the case on Sept. 21.
UEFA's options to punish Spartak include closing part or all of their stadium for a future game. Liverpool visit the Otkritie Arena -- a 2018 World Cup venue -- in Moscow on Sept. 26.
The flare rocketed out of the section holding visiting Spartak fans early in their 1-1 draw with Slovenian champions...