The Central Criminal Court has heard that a 25-year-old murder victim was mistaken for his brother when he was shot dead.
Ian Tobin, a father of two, died afer he was shot through the front door of a house in Fortlawn Park, Blanchardstown, in May 2007.
25-year-old Bryan Ryan, originally from Sheepmore Crescent, denies the charge of murder.
The prosecution claims he was involved in a joint enterprise with another man who fired the gun.
Lawyers for the prosecution told the court that Mr Ryan was driving the motorbike carrying the gunman and the jury would have to decide if he was ‘equally responsible’ for the crime of murder.
The court heard that Mr Tobin was shot in a case of mistaken identity for his brother Blake who had been involved in a long running feud with a friend of the accused.
Both brothers were in the house when the gunman fired a sawn off shotgun through a glass panel in the door.
Ian Tobin died from his injuries a few days after the shooting.
The trial will hear evidence from a key witness who will say Mr Ryan rang him before the shooting to say Blake Tobin would be killed and rang him after to say the job had been done.
The jury also heard that Mr Ryan made admissions to gardaí while in custody that he had driven the motorbike and had burned it out afterwards.
However, he said he was not aware that his passenger was carrying a gun and thought he had only intended to frighten someone.