Just minutes before the show was due to start gunmen entered the venue and opened fire, killing more than 60 people.
First there were rounds of machine gun fire, then piercing screams of panic and then the Crocus City Hall went up in flames.
Alexei, who had been waiting for a concert by the Piknik rock band, said how he hid behind seats in the concert hall before making his escape amid scenes of panic as spectators were gunned down.
Hundreds of fans had been at the hall in the Krasnogorsk suburb north of Moscow for the concert. But just minutes before the music was due to start armed individuals entered the theatre and opened fire.
Authorities said more than 60 people had been killed and at least 100 injured in the attacks that drew international condemnation.
“It was just before the start,” Alexei, a music producer, said by telephone.
“We heard several rounds of machine gun fire and then there was a horrible scream from a woman.
