Multiple armed men entered Crocus City Hall, a concert venue in the Moscow suburb of Krasnogorsk, at around 8 pm local time on Friday night, opening fire at the crowd who were waiting for a rock concert to begin. A fire also broke out on the upper floor of the venue, engulfing the building in flames as people tried to flee, while others who were hiding from the shooters ended up trapped inside the venue as the fire consumed much of the building.