The police put an end to an illegal party on the Nieuwe Meer in Amsterdam on Sunday. The party was held over multiple boats and had at least 500 attendees, the police said in a statement. Two people were arrested, and a water scooter and sound equipment were seized.
Three people became unwell during the party. "Presumably due to the combination of alcohol and/or drug use and the high temperatures", the police said. They were taken to hospital for examination and treatment.