The alarm came in at 22:03 on Thursday evening.
– We received calls about loud bangs. We are on site together with the ambulance and police, says Kim Hellberg at the rescue service.
The explosion has occurred at an apartment building in Farsta, near the subway station.
Two to hospital
Two people have been taken to hospital. One person is injured, but the condition should not be life-threatening and one person has been taken to hospital for a check-up.
The property has also suffered material damage, including the gate being destroyed.
– It is unclear what has exploded. I have no information that residents have been evacuated, says police spokesperson Nadya Norton.
No arrests
A police operation is underway at the scene where they are looking for perpetrators.
– No one is arrested, says Nadya Norton.
At the same time, work is underway to gather information, secure leads and talk to witnesses.
A preliminary investigation into gross destruction of public danger and violation of the Act on Flammable and Explosive Goods has been initiated.