He was wearing all black. His face was not masked ... We ducked behind a counter but I stood up and watched him. Two explosions went off shortly after one another. By that time he had stopped shooting, he turned around and started coming towards us. He was holding his gun inside his jacket. He looked around anxiously to see if anyone was going to stop him and then went down the escalator ... We heard some more gunfire and then another explosion, and then it was over.