The accident must have occurred when the bus made a left turn on Kungsgatan at Resecentrum.

- Preliminary information alleges that the man was at the intersection at a pedestrian crossing.

The bus runs on or over him, something has happened there.

He was walking his dog, says police spokesman Jonas Eronen.

Several witnesses

The police have seized the bus and initiated a preliminary investigation with the initial criminal classification causing bodily injury.

Are there any criminal suspicions against the driver?

- Supplementary interrogations will be held in the next few days and as they are done, the heading may be adjusted.

There are several witnesses and that makes the investigators believe that it will be possible to get clarity on what happened, says Jonas Eronen.

Life-threatening injuries

The 73-year-old man was taken by ambulance to the University Hospital after the accident.

On Wednesday, the hospital announced that the man's injuries were life-threatening, but that the situation was stable.

More information about the damage situation has not yet been released.