The father of a schoolboy killed in a hit-and-run crash has spoken of his family's grief and their disbelief at the actions of the driver.
Jack was on his way home from school when he was struck
Michael Anderson, 37, said he could not understand how someone could have left his 10-year-old son Jack to die.
Mr Anderson and his wife Yvonne, 36, made an appeal for information about the incident in Edinburgh on Thursday.
Detective Superintendent Craig Naylor said officers were treating the death of the boy as murder.
Mr Anderson, who broke down while reading a statement, said Jack was a "quiet lad but always happy".
Jack was hit by a green Peugeot 406 with the registration number W118 WDS on Saughton Road North, near his Edinburgh home, at 1525 BST on Thursday. He died shortly after in hospital.
The youngster had just left Carrick Knowe Primary School for the day when the crash happened.
The car, which had three occupants, overtook stationary traffic at the crossing and hit Jack.
Mr and Mrs Anderson, who were both wearing black, were joined by Mr Naylor, the officer leading the inquiry, at a media conference on Tuesday.
Mr Anderson said: "We're still coming to terms with what happened. We think of the things we never had a chance to do with him - walking him to secondary school, taking him running.
"It is difficult to accept.
"Why Jack? He had crossed that road thousands of times, it was the safest part of the road and in his words 'That's the right place to cross the road'.
"We don't understand why someone would do that to him and leave him."
Mr Anderson was comforted by his wife at the conference
Speaking about his son's nature, Mr Anderson said: "He was a quiet lad but always happy. You couldn't fault him at all. He loved playing outside with his friends.
"Jack was a huge Star Wars fan. He was fascinated with the films and would play games based on them.
"I just found a letter he had written to Santa for his Christmas asking for a Star Wars II Lego PlayStation game.
"He had just joined the choir at Carrick Knowe Primary School, he loved acting and dressing up."
Mr Anderson added: "Next year I was going to take him running with me."
As he finished his prepared statement, Mr Anderson broke down and was helped out of the media conference by his wife, who did not speak to reporters.
Mr Naylor appealed to anyone who recognised the description of the car to come forward.
He said: "We also want to appeal to the criminal fraternity to let us know if they have any information about what happened on Thursday, 5 October.
"We are dealing with callous, cold-hearted individuals who have not hesitated in murdering a 10-year-old boy.
"If you know of someone who has recently had a large green car and no longer has it then please call us.
"Also if you know anyone who has disappeared, who had a green car, or someone whose behaviour has changed significantly since last Thursday contact us."