The trial of two Limerick men charged with murdering businessman Roy Collins has been adjourned until Tuesday.

Proceedings got under way at the Special Criminal Court in Dublin this morning.

Wayne Dundon, 35, of Lenihan Avenue, Prospect, and Nathan Killeen, 23, of Hyde Road, Prospect, are charged with murdering the 35-year-old at Coin Castle Amusements, Roxboro Road Shopping Centre, Limerick, on 9 April 2009.

Opening the case for the prosecution senior Counsel Michael O'Higgins said Roy Collins, who ran an amusement arcade in Limerick, was at work on 9 April 2009 when a lone gunman entered the premises and shot him once in the chest.

He was conscious for a short time afterwards but later died.

Mr O'Higgins said it was the prosecution's case that Nathan Killeen was the driver and another man, James Dillon, was the gunman.

The prosecution alleges Wayne Dundon, who was in custody at the time, was directing events from prison.

Mr O'Higgins said there would be circumstantial evidence to connect Nathan Killeen, who was seen at the shopping centre shortly before the shooting.

He was later found hiding in an attic after gardaí had surrounded a house.

Mr O'Higgins said the “meat” of the case would come from a number of key witnesses, all of whom had associations with the two accused.

Some of these witnesses were criminal associates, he said.

One witness, Gareth Collins, who is also known as Gareth Keogh, will say he was offered €20,000 to drive the car and was told that the plan was to "whack" Steve Collins, the father of the murdered man, who ran a local pub.

Gareth Collins will say he was put under pressure to drive the car but stood his ground and refused.

He will also say he was put on the phone to Mr Dundon, who told him it was a simple driving job and everything else was in place, but he again refused.

Gareth Collins/Keogh also claims he was asked but refused to make a petrol bomb after the shooting to be used to burn out the car.

Another witness, Anthony McCarthy, who was in custody at the time, will give evidence to say he heard Mr Dundon on the phone in prison shouting: "You better do it for us or you and your mother will be sorry."

When he asked Mr Dundon who he was talking to he said it was James Dillon.

He is also alleged to have said of James Dillon "We will see how loyal he is now" when Mr McCarthy told Wayne Dundon not to speak to him like that because he was their cousin.

Mr O'Higgins said it was the prosecution’s case that Mr Dundon was part of a joint enterprise even though he was in custody at the time.

There was very strong circumstantial evidence against Mr Killeen and the court would be satisfied from the "compelling and convincing evidence" that the case for murder would be made out against the two men.

Both accused deny the charges.