The party was in full swing when the roof suddenly collapsed on a party boat in Berlin, Germany. Nine people were injured, four of them seriously, according to reports from the city's fire department.
It is unclear why the roof collapsed.
About 120 guests were on board the boat, which was anchored in the Spree River.
Dozens of rescue workers were called to the scene, as well as rescue boats, when the alarm sounded late on Tuesday. There are unconfirmed reports that a concert was held on board the vessel.
