A man stabbed a bus driver to death after he phoned police to complain about noise coming from a house party.
On Wednesday at the High Court in Edinburgh, Adam Lundy, 27, was found guilty of attacking and murdering 44-year-old John Kiltie outside his home on Park Road in Girvan, South Ayrshire, on May 28.
The father-of-four was repeatedly punched and kicked on the head and body and stabbed four times.
He died from a stab wound to the heart inflicted by a double-edged five-inch bladed knife
Two other men, Kern Allison, 18, and Nicholas Goodwin, 24, had been charged with assaulting Mr Kiltie but not with his murder.
Allison was unanimously found guilty of assault and Goodwin was found not guilty by a majority.
Over the course of the 13-day trial, the jury heard the houses in Park Road were a mixture of owner-occupied and council tenancies.
Mr Kiltie and his partner 38-year old Sharon Tweedie owned number eight and had lived there for 20 years.
Directly across the road from them was number 13, a council property, occupied by a young single mother with a four-year-old child, who had been there for nine months.
Ms Tweedie told the court there had been trouble with noisy behaviour from number 13 regularly.
Through the evening of May 27 into the morning of May 28 there had been continuous shouting and music coming from the house.
She asked her husband to phone the police, being concerned about the child in number 13.
Two police cars arrived with four officers. Ms Tweedie said the police stayed "just minutes" and left.
The family were planning to go to Ayr for the day and Mr Kiltie began cleaning his Rover car.
The woman from number 13 was shouting at John Kiltie calling him "a police grass". Sharon Tweedie said Allison came out of the living room window.
"There was a lot of shouting and swearing" she said. "He was very upset and threw a can of beer at John. It bounced off the roof of the car and hit John on the back of the head, exploded and the contents went everywhere".
The woman shouted to Allison to "go and do him in". Ms Tweddie then went over number 13 and began arguing with the woman.
She said: "There was a commotion and I heard really loud screaming. I have never heard anything like it in my life. It was like an animal".
Allison and Lundy then appeared from the back garden and she heard Allison say "We have to go. We've done him in" and they ran off.
Mr Kiltie's mother, 71-year old Georgina Kiltie, heard the shouting, saw Sharon at number 13 and went to see what was going on.
She said Allison was taunting her son and challenging him, two other men joined in then and "all hell broke loose".
The three men surrounded her son and pushed him into the back garden.
Mrs Kiltie said: "I tried to get in front of him. I was so scared. I just could not move them. I could not save him".
She added: "His eyes just shot open when one hit him with a flower pot. John staggered and then another one hit him on the other side of his head with something. He fell into the wee swimming pool.
"He was turning blue. I could see blood on his T-shirt. I rolled it up and I saw stab wounds. I was shouting for help".
Neighbour Dianne Hamilton, whose house overlooks the back garden of number 13, said she saw Lundy go into the house and return with a red-handled knife.
She said: "He drew a breath and went charging past the women, right through to John. I heard Sharon screaming".
The three accused, in statements to the police, claimed Mr Kiltie had attacked them with a baseball bat when he arrived at the house after the beer can incident.
Lundy said he had been acting in self-defence but advocate depute Tim Niven-Smith pointed out Mr Kiltie had been stabbed four times.
After the jury returned their verdicts, Mr Niven-Smith told judge Lady Scott that Lundy was "a violent recidivist with a predilection for carrying weapons".
Judge Lady Scott warned Lundy deferred sentence to December 15.
Allison, who had been on remand for 10 months, was admonished.