Alexander Zhurik, 16, led more than 20 people out of the building after the terrorist attack. He was on the ground floor in the cloakroom when he heard gunfire and saw people running.

When everyone went outside, the first thing he did was call his mother and find out if Lisa had survived. Alexander admits that in the first days after the tragedy he felt normal, but now it's more difficult. “It’s hard inside, now you understand what a tragedy happened,” he admitted.