At least five people were injured late Saturday in an explosion at an apartment building in the western German city of Wuppertal, according to local emergency services.
"It can currently not be ruled out that there are still other people in the building," police said Sunday morning. "The rescue efforts are ongoing."
A police spokesman said earlier 24 people were injured by the blast, including four who suffered serious injuries.
Several residents managed to escape immediately after the blast, but others became trapped and had to call for help before they could be rescued on fire brigade ladders.
A large number of rescue workers attended the emergency and photos of the scene showed piles of rubble and debris surrounding the multi-storey building.
Other photos showed large parts of the facade and roof missing, as well as a car in the street that was completely crushed by the rubble.
Specialist engineers were called in to stabilize the building after it was determined to be at risk of completely collapsing.
Police were investigating the cause of the explosion.
Photos showed large parts of the facade and roof missing, as well as a car in the street that was completely crushed by the rubble.
