The BBC have reported this incident in Edinburgh.
Not good.Police are hunting two youths who threw a large lump of ice from an Edinburgh bridge onto a cyclist's head.
The incident happened as the 37-year-old man was cycling under the Roseburn Bridge in the Wester Coates area of the city at about 1800 BST on Wednesday.
A police spokesman said the ice hit the man on the head and shattered his headlamp.
He suffered dizziness and a sore head, neck and back, but did not need hospital treatment.
The teenage boys were described as having local accents.
A Lothian and Borders Police spokesman said: "Fortunately the man was wearing a cycling helmet or his injuries could have been more serious.
"We are eager to speak to anyone who was near the bridge and can help us identify the individuals responsible.
"Similarly, anyone with information that can assist with our inquiries is asked to contact police immediately."