Security surrounding the Dutch Royal Family has been called into question after a man attempted to attack them by driving his car at their bus during a parade.Many people who were at the scene are struggling to come to terms with the tragedy which has now claimed seven lives. The crowds in Apeldoorn had been celebrating Queen’s Day – a national holiday in the Netherlands – when the tragedy occured. The driver, Karst Tates, 38, was critically wounded and died last night of his injuries. His car crashed into a monument after mowing down several bystanders. Eight people, including one described as critical, remain hurt in hospital. The badly damaged vehicle just mised a bus carrying Quen Beatrix and her family. Visibly shocked, she appeared on television last night to send her condolences to the victims. Hundreds of police officers were on duty as part of a massive security operation that took months to plan. But Authorities say they were taken completely by surprise by the attempted attack by the man who had no criminal record or known mental health problems.