200 attend rave in Norway bunker; 20 hospitalised due to gas poisoning

Over 20 people have been hospitalised due to carbon monoxide poisoning after attending a rave in an underground bunker in Norwegian capital Oslo. Authorities believe the poisoning was caused by portable generators at the rave, which is thought to have been attended by around 200 people. "They are all improving. We can say they are out of danger," doctor said.