Swedish police say resultant fire is under control as emergency services rule out gas leak as the cause
Police are investigating whether an explosive device was left in an apartment building after four people were seriously hurt in an explosion and fire in the Swedish city of Gothenburg.
About 25 people were taken to hospital after the blast on Tuesday morning set ablaze the building in a central residential area. Firefighters pulled people from the building while others used tied sheets to lower themselves from balconies as grey smoke billowed out of stairwells and windows.
