According to a media report, a serious accident on the “Höllenblitz” roller coaster marred the first evening of the Oktoberfest. As the “Bild” newspaper reports, two cars collided at 10:30 p.m. Several people were injured and had to be taken to hospital. Images from on site show the injured being cared for by paramedics.

The “Hell Blitz” is considered the largest indoor roller coaster in the world. The roller coaster runs in the dark and reaches speeds of up to 79 kilometers per hour.

The Oktoberfest was opened on Saturday at 12 p.m. by Munich’s mayor Dieter Reiter. It is considered the largest folk festival in the world and runs until October 3rd.