It was anything but a fair fight - six young men against a 52-year-old man.
They had beer bottles. He had what looked like a bicycle chain.
The scuffle lasted mere minutes. When it ended, the man was barely alive and the youths had fled.
He had about 95 injuries, including a fractured skull and spine, and internal injuries all over his body.
Mr Goh Ho Leong, who was unemployed, died in hospital two days later, on March 10, 2011.
In the High Court on Friday, the six - Anandraj Manimaran, 21, twins Segu Jamaldeen Nafil Mohamed and Muhizin Khan, 20, S. Karthikesu, 21, Abdul Samad Mohamed Kasim, 25, and Suriya Thankamany, 20 - pleaded guilty to causing Mr Goh's death.
Why was the attack so vicious?
The evening of March 8 had started innocently enough at Tiong Bahru Park, where the six accused and four other friends had met to chat and to drink alcohol.
But trouble started at about 8.30pm when another group sitting nearby were unhappy with the youths and went over to confront them.
Half an hour later, Segu, Abdul Samad and a third friend went to meet the other group members at a nearby public toilet to "resolve" their conflict.
Inside the toilet, Segu pushed open a cubicle door and found Mr Goh inside.
Enraged by the intrusion, Mr Goh scolded Segu and they got into an argument.