Several victims have been reported following a shooting incident that occurred early Sunday morning at an event in northern Switzerland, according to local police.

Authorities in the canton of Aargau confirmed a large-scale operation is underway. Police have appealed to the public for any film or pictures related to the incident, which the mass-market tabloid Blick reported took place at a rave party.

The newspaper published video footage, allegedly from a reader, that depicts a nighttime street scene accompanied by the sound of gunshots.

No further details regarding the circumstances or the number of victims were immediately available.

Two police officers standing on a street in Aarau, Switzerland, with one inspecting a car.