A woman has told a Dublin murder trial that she saw the accused man stab his alleged victim with a sharp knife following a fist fight outside a chipper.

Donal Colgan (65) of Killarney Court, Killarney Street in Dublin 1 denies murdering David Sheridan on North Strand Road in August 2014.

Teresa Marcela was working in Luigi’s Takeaway on the night of the alleged murder – August 17th 2014.

Donal Colgan was a regular, she said, but she had never seen David Sheridan before that night. He seemed tipsy, she said and ordered a batter burger.

Some sort of row between him and Mr Colgan broke out outside and a fist fight developed. She said the accused was throwing more punches.

She said she heard people shouting that he was gone, but from the hatch inside, she saw him return a short time later.

From his jacket, she said he pulled a sharp knife, similar to one they use to cut vegetables in the chipper. She said he lifted it up and stabbed Mr Sheridan a few times.

She could be seen on CCTV footage running into the back of the shop. She said she was screaming and couldn’t believe what she was seeing.