The man accused of murdering a Glasgow schoolboy has said he heard him scream seconds before he saw a fireball on a pathway above the River Clyde.
Kriss Donald's body was found in the east end of Glasgow
Daanish Zahid, 20, admitted being in a car at the path when 15-year-old Kriss Donald was stabbed then set on fire.
But Mr Zahid told the High Court in Glasgow he did not leave the car and blames two others for Kriss's death.
He said there were no words to express his sorrow for what had happened to Kriss last March.
The court had previously heard that the teenager may have been held down while he was knifed 13 times before being doused in petrol and set on fire.
Questioned by Ian Duguid QC as the defence opened its case, Mr Zahid told the court he was a front seat passenger on the day of the death, but he did not assault Kriss.
While the group was driving from Dundee to Glasgow Kriss was assured by one of
them that he would be released.
Mr Zahid said one of the group told Kriss: "You are going to be all right. It is
your friends I am after."
A short time later the car drove up a lane and parked behind the Celtic Supporters Club on London Road, in the east end of the city.
Mr Zahid said two members of the group left the car with Kriss and walked behind
Asked by Mr Duguid whether he was aware Kriss was being stabbed, Mr Zahid said:
"I was not aware he was getting stabbed but I was aware something was happening
to him as I heard a scream, a cry of pain."
When asked if he had seen a fireball, the accused replied: "After he had gone out
of the car I saw the fireball a couple of seconds later, after I heard a cry.
"Then I looked back to see what it was and I saw a fire."
Mr Zahid said the group then got back in the car and drove off.
Asked what his reaction was to the realisation that Kriss had been set on fire, he said: "I was shellshocked."
Mr Zahid, of Sheilds Road, Pollokshields, denies assaulting, abducting and murdering Kriss in March.
He has lodged a special defence blaming three others for Kriss's abduction and death.
The trial continues.