After a suspected gas leak triggered alarms at the Swedish Security Service's headquarters in Solna, two police officers were hospitalized but have since been discharged.

The alarm, which occurred around noon on Friday, was initially suspected to be fosgene, a chemical warfare agent, after sensors detected its presence.

However, the emergency services later confirmed that no gas was found either inside or outside the building.

The cause of the alarm remains unclear, with ongoing investigations into whether welding work might have triggered the sensors.

A partial evacuation was conducted, and eight individuals were taken to hospital with respiratory issues.