A cyclist was seriously injured after his bike collided with a double-decker bus.

The incident happened at Bridge of Muchalls on the A90 south of Aberdeen around 8.25pm on Wednesday.

The 43-year-old man was taken to Aberdeen Royal Infirmary where he is said to be in a stable condition.

Police closed the road until 3am while they carried out accident investigations.

Officers have appealed for any witnesses to come forward.

Earlier in the day, police had attended reports of a man walking with a bicycle along the road.

Roads policing sergeant Steve Manson said: "Shortly after 3pm police received a report of a man with a bicycle walking on the central reservation of the A90 near Stonehaven.

"Police attended and the man was given suitable advice.

"Shortly before 3.40pm police received a further report of a man with a bicycle walking northbound on the A90 near Stonehaven, he was traced by police, taken to Stonehaven where he advised that he would get a bus to Aberdeen."

Sgt Manson continued: "At around 7.40pm there were further reports to police of a man wearing dark clothing, cycling north on the A90 near Muchalls, Stonehaven. Police were unable to trace the cyclist at this time.

"I would urge anyone with information or who saw a cyclist on the A90 near Stonehaven wearing dark clothing and riding a dark coloured pedal cycle, particularly near to the time of the collision or who saw a man matching this description pushing a bike to contact officers as soon as possible."

Police can be contacted via 101.