Swiss media have reported that six people have been injured in a roller coaster crash and a merry-go-round mishap at a fair in the city of Basel.

Swiss television SRF reports that one cart bumped into another one on the roller coaster, likely because of technical problems with the brakes. One woman was severely injured in the crash Saturday night and was hospitalized while four others were treated at the scene.

Separately, a man was injured when he was thrown to the ground while exiting a merry-go-round. He was hospitalized.

SRF reported that police were investigating the incidents.

The Basel Autumn Fair is Switzerland's biggest fair with around 500 stands and amusement activities. It lasts through Nov. 12.