Stockholm: Three people were killed and three others injured when a double-decker bus crashed into a bus stop in central Stockholm on Friday, police said.

The accident occurred around 3:23 p.m. on Valhallavägen in the Östermalm district, near the Royal Institute of Technology. The front of the vehicle was severely damaged after ramming into the bus shelter, authorities said.

Police said the crash was being investigated as a case of involuntary manslaughter, though the cause remained unclear. Swedish news agency TT reported that the bus driver had been detained and would be questioned to determine the circumstances of the incident.

Emergency services confirmed that the vehicle was a regular city bus but not in service at the time, and no passengers were on board.

Reacting to the tragedy, Prime Minister Ulf Kristersson said on X that he had “received the tragic news that several people have been killed and injured at a bus stop ... people who were perhaps on their way home to family, friends, or a quiet evening at home.”

“We do not yet know the cause of this, but my thoughts are primarily with those who have been affected and their families,” he added.

With inputs from AP