Overview
- The shooting, which occurred Sunday night at the Schachen hippodrome during the annual Aarauer Rave, killed a 22-year-old woman and wounded five others, some seriously.
- Police arrested a 43-year-old Swiss man late Monday who is described as 'strongly suspected' and investigators currently favour the view he acted alone.
- Forensic teams reported traces of two different calibres at the scene, suggesting both a pistol-type weapon and a rifle were used, and work to match rounds and trajectories is ongoing.
- Authorities mounted a wide operation with cordons, reinforcements and an army Super Puma helicopter, and they have asked the public to send photos and videos to help the probe.
- A police press briefing is planned for follow-up, investigators have not determined a motive, and the case is being handled with cross-cantonal and cross-border cooperation because large shootings are rare in Switzerland.