A jury at the Dublin City Coroner's Court returned a verdict of unlawful killing at an inquest into the death of Mr Pat O'Donnell, a security guard who was killed at the Law Library last year.
Witnesses told the court that a stolen car drove at high speed towards the gates of the Law Library car-park, stopped and reversed in order to gain more momentum before it drove through the gates, killing Mr O'Donnell (50), who was standing behind them.
Mr Robert Core, who was working with Mr O'Donnell, said he saw two men on the security cameras walking down the ramp of the car-park of the Law Library at about 4 a.m. on March 10th last year. Mr O'Donnell rang the gardai who arrived after a few minutes.
Garda Robert Kearney said when he reached the Law Library car-park he heard a loud screeching and saw a black Volkswagen Golf car driving around the corner of the car park. When it drove past him he tried to open the passenger door.
The car then stopped, reversed and drove off again towards the gate. "The driver revved it very loudly. It was driving as fast as it could for such a short distance."
He said he saw Mr O'Donnell holding the gates with his hands and shouted to him to get out of the way.
He then saw the car crash through the gates. The gates consisted of steel bars and the drivers may have been able to see Mr O'Donnell through them.
Mr Pat Kelly, a milkman who arrived on the scene to tell the gardai he had seen two men with a bolt cutter, said the car crashed through the gates and pulled them from their hinges. He said Mr O'Donnell was hit into the air and the security gates fell on top of him.
Garda Chris Megraw said as the car drove out of the car park the driver steered the car towards him, hitting him and breaking his arm.
He said when he saw the car crash through the gates he assumed Mr O'Donnell had jumped out of the way. When he went up to the patrol car to report the stolen car he saw Mr O'Donnell lying on the ground with the gates on top of him. With the help of Garda Kearney he lifted the gates off Mr O'Donnell and called an ambulance.
Mr O'Donnell was taken to the Mater Hospital and pronounced dead on arrival. The post-mortem showed he had died from severe head and chest injuries.
Det Insp John McMahon said a file was sent to the DPP but there was insufficient evidence for a prosecution.