A man allegedly murdered outside his mum's pub was found with his “face hanging off”, a witness told a trial .
James Nolan was part of the attempts to save dying dad in November 2018.
Mr Nolan recalled finding the injured 30 year-old in the street beside the Old Stag Inn bar in Glasgow's Pollokshaws.
The 65 year-old stated he then spotted a man with a “seriously big knife” apparently “strolling” away from the scene.
He was today giving evidence at the trial of David Callaghan, 30, and Craig Corrall, 39, at the High Court in Glasgow, where they deny murdering Mr Hassan.
Mr Nolan – an electrician - had been at the pub on the night of the alleged killing for a meeting with other tradesman.
The bar is run by Mr Hassan's mum Ann Marie Lynch.
The trial previously heard how Mr Hassan came in that evening to collect keys, before Miss Lynch later became aware of an incident outside.
Mr Nolan recalled getting a “fright” after hearing a “clatter”.
He went out and found Mr Hassan on the ground trying to get up.
The witness added: “I just thought it was a punching or a kicking. I never expected this.”
Mr Nolan then noticed “a guy walking down the road”.
Prosecutor Lynsey MacDonald asked: “How fast was he going?”
Mr Nolan replied: “He was not – just a stroll. I said: 'What the f*** are you doing?'.
“The guy turned around and just stared at me. He had a weapon. There was no speech, nothing.
“It was a butcher's knife. It was big...seriously big.”
Mr Nolan said Mr Hassan's mum grabbed him to try and get him back inside.
But, asked if he did return to the pub, he added: “No. I seen the state the boy (Mr Hassan) was in.
“I don't think his mum actually saw what I did. I went for CPR, but his face was hanging off.
“His mother was on the phone to the paramedics.
“The boy was lying there and I put him in the recovery position. You could tell that it was pretty heavy.
“He was trying to talk, trying to get up. His eyes were going by the second, clouding over, but there was still life in him yet.
“I stayed with him until the paramedics arrived.”
Mr Nolan – who eventually did give CPR - said he tried to stop Miss Lynch seeing the extent of her son's injuries.
The witness went on: “His face was off...like a hinge.”
Mr Nolan said he had got to know Miss Lynch since she took over the Old Stag Inn often helping with maintenance jobs.
Corral's QC Thomas Ross later asked: “You shared a terrible experience where her son was killed outside the pub and were trying to help Owen before ambulance got there?”
Mr Nolan: “Yes.”
Prosecutors claim Mr Hassan was chased, seized by the body and the repeatedly struck with knives or machetes.
The trial, before Lord Woolman, continues.
