During a home game on Sunday, November 28, CSKA Moscow fans set off pyrotechnics inside the VEB Arena after their team suffered a 2-0 loss to Zenit St. Petersburg. Upon discovering that the stadium's surveillance cameras were down, Moscow police kept spectators in the stands for three hours, while carrying out hundreds of arrests. On Monday morning, the police reported that they had detained 408 soccer fans in total and filed 51 administrative offense protocols. In response, the Russian Premier League decried the actions of the police, but CSKA Moscow drew even more backlash by condemning fans for committing "unlawful acts." Meanwhile, State Duma lawmakers have seized upon the incident to argue in favor of introducing a "Fan ID" system for sporting events.