Mapped: Gunmen's escape from hotel shooting rampage
Three gunmen fled the scene dressed in garda-style uniforms.
Their faces were completely covered but they spoke with "strong Dublin accents".
It is believed they sped through the Grace Park area in a van.
The van was found burnt out in the Charlemont Estate shortly after the incident.
The men are understood to have then escaped on foot through St Vincent's GAA club towards Killester.
However the trial on the men goes cold after that.
Gardai arrived at the hotel minutes later - a witness described the scene as "absolute pandemonium".
One man died at the scene, while another two were rushed two hospital. One of the injured was shot in the leg, while the second was shot in the stomach.
Women and children were crying in shock after the incident.