An unprovoked attack on an Asian teenager in broad daylight is being treated as a racist incident by police.
Police have appealed for information on the attack
The 16-year-old was walking on Leith Walk, Edinburgh, with an 11-year-old friend when he was approached by a man at about 1400 BST on Tuesday.
He shouted at the boys before punching the teenager on the head and knocking him to the ground.
Police are not linking the attack to fears of a backlash against the Muslim community after the London bombings.
Lothian and Borders Police said the attacker, who was listening to a CD player and carrying large "DJ style" headphones, made off towards Leith.
The man was described as being white, about 5ft 6in tall, of slim build, bald, with a skinny face and spoke with a quiet, possibly foreign, accent.
The incident took place close to Leith Walk's junction with Lorne Street.
The victim, who was helped to his feet by an older Asian man, received treatment for head and facial injuries at Edinburgh Royal Infirmary.
A police spokeswoman said: "We are treating this as an unprovoked racial assault and we are keen to trace anyone who witnessed it to come forward.
"Leith Walk is a very busy area and would have been especially busy with pedestrians and vehicles on a sunny afternoon as it was yesterday.
"We are especially keen to trace the Asian man who kindly helped the boy to his feet after the assault, as he may hold vital information about the attacker."