About 60 people have been injured in Amsterdam at a ceremony for victims of war being attended by Queen Beatrix.
Police say a man caused panic when he began screaming, causing a stampede. Within minutes order was restored and the Queen continued her visit.
Security was tight at the event following an incident on Queen's Day last year when a car was driven into a crowd of spectators watching the royal parade in Apeldoorn. Seven people and the driver died from their injuries.