French public prosecutor François Molins confirmed late Friday that 84 people, including ten children and teenagers, were killed when a man drove a 19-tonne truck into seafront crowds attending a firework display during Bastille Day celebrations in the Riviera city of Nice on Thursday evening. The truck attack was carried out by a lone perpetrator, 31-year-old Mohamed Lahouaiej Bouhlel, a Tunisian national who had been living in Nice for several years. Molins said a total of 202 people were injured in the attack, and 52 of them were on Friday in a critical condition. The attack is the subject of an investigation into three counts of terrorist acts, while doubts emerged late Friday over the true motive for the attack. Graham Tearse reports.