Simon Quilligan was previously sentenced to six years in prison for possession of a firearm with the intent to endanger life

Simon Quilligan, who was found not guilty of an attempted murder at the site, was sentenced to six years' imprisonment at the Central Criminal Court for the possession of a firearm.

Mr Quilligan also has a previous conviction for assaulting a police officer, a conviction for obstructing a police offer and four convictions for failing to comply with directions from an officer.