Rheinfelden (dpa / lsw) – After a fire in a warehouse in Rheinfelden (Lörrach district), three employees suspected of smoke poisoning were taken to the hospital as a precaution. They have since been released, police said on Thursday. The fire broke out on Wednesday and was quickly brought under control. Since the hall could no longer be entered due to the risk of collapse, the fire brigade decided to demolish it for safety reasons. The property damage is estimated at up to one million euros. The cause of fire was unclear for the moment.