• One person killed and five injured in shooting at a rave in Aarau, Switzerland.
• The incident occurred early Sunday morning during the annual Aarauer Rave party.
• A large police operation is underway to locate the unknown perpetrator.
• Witnesses reported bursts of gunfire amid a crowd of approximately 3,500 attendees.
• Authorities appeal for any information or footage from the public regarding the incident.

One person has died, and five others were injured in a shooting that occurred early Sunday morning at a rave in Aarau, a town in northern Switzerland. The local police confirmed the incident, stating that some of the injuries are serious. The shooting took place during the annual "Aarau Rave VOL. 7," attended by around 3,500 people, according to reports from BBC, South China Morning Post, and CBS News.

The shooting occurred near a horse racing track in Aarau around 2:30 a.m., prompting a significant police response, which included armed officers and emergency services deployed across the area. Eyewitnesses reported hearing "bursts of gunfire" and initially mistook the shots for fireworks. Many partygoers sought refuge in nearby locations, including a gymnasium, as chaos ensued, as detailed by Channel News Asia and Al Jazeera.

Authorities are continuing their search for the unknown suspect(s) involved in the shooting and have stated that the motives remain unclear. Police have cordoned off extensive areas around the incident site and have appealed for any eyewitness footage or information relating to the attack. A local resident shared video evidence showing deserted streets accompanied by what sounded like gunfire, as reported by Le Monde and Channel News Asia.