Two dozen hurt as dance floor collapses during concert
25 people have been injured after the accident in the northern Swedish town of Umeå.
A two metre deep and four metre wide hole appeared in front of the stage, after the floor gave-way underneath the dancers.
All twenty-five were taken to hospital, most were only slightly injured, but three suffered fractures after falling on top of each other into the hole.
Around seven hundred young people were at the concert given by Swedish rock band , Mando Diao.