Opening the case, Mr Shaw said: "Gunshots were fired at a man called Paul Allen as he stood in the kitchen at the back of his large detached house.
Mr Shaw said the suspects "made a lot of mistakes" He said DNA belonging to Kelly and Louis Ahearn was allegedly recovered from a fence panel at the crime scene.
A cage fighter jailed for Britain's biggest cash robbery was left paralysed after he was shot in the neck as he stood in his kitchen, a court has heard.
Six bullets were fired from a 9mm semi-automatic Glock handgun by a shooter standing behind a wooden fence, next to a summer house, in the garden backing onto the victim's home.
A sight used for a Glock handgun to improve accuracy was allegedly later recovered from Kelly's home, the court heard.