Overview
- The crash occurred shortly after 15:00 local time on Valhallavägen in central Stockholm's Östermalm district.
- Police report multiple fatalities and rescue services say several people are seriously injured.
- The bus driver was arrested at the scene, with initial reports citing a potential aggravated negligent homicide accusation.
- Authorities say the cause remains undetermined and the incident is under active investigation.
- Numerous ambulances and a rescue helicopter were dispatched to the site.