The surveillance camera footage shows the first police car rolling forward as the attackers lunge at a man to stab him late Saturday night.

Irish police arrested two people on Tuesday, one of whom was released without charge, in connection with an investigation into one of the three attackers who killed seven people in London at the weekend.

Authorities released the name of Youssef Zaghba, 22, Tuesday morning, saying the man is believed to be an Italian national of Moroccan descent.