During the Queen's Day parade in Apeldoorn, a festive public event celebrating the Dutch monarchy, a man named Anton D. attempted to assassinate Queen Beatrix by driving his car into the crowd. The incident unfolded as thousands gathered to celebrate the national holiday. The perpetrator drove a dark Volkswagen Golf and at high speed, veered towards the royal carriage that was carrying Queen Beatrix and her family. The actions of Anton D. resulted in a catastrophic incident, culminating in the deaths of seven individuals, one being the assailant himself, and left another ten people injured. Eyewitness accounts described the shocking moment when the car sped toward them, creating panic among the spectators.

Authorities reported that immediately following the incident, emergency services rushed to the chaotic scene to provide assistance to the victims and transport them to nearby hospitals. Investigations into the motives of the perpetrator revealed personal and mental health issues, indicating that it may not have been an organized political attack specifically aimed at the monarchy. Following the incident, Queen Beatrix expressed her condolences for the victims, and the event raised concerns about security measures at public appearances by royal family members.

The assailant's actions sparked discussions about the safety of public figures and the adequacy of protection offered during large public events. As a result, the Netherlands heightened its security protocols for future royal events, reflecting a commitment to safeguarding the monarchy amidst rising concerns regarding threats to public security.