It is thought dissident republicans may have been behind the attack.
It is thought a campaign by dissident republicans may be to blame.
At the time of writing, dissident republicans are suspected for the attack.
The police arrested six people and said that dissident republicans were responsible.
Within the area, there is a small but dedicated network of support for dissident republicans.
We know dissident republican would like to disrupt the games - it is after all a world event.
It is suspected that dissident republicans carried out the attack.
No group has claimed responsibility for the attack but dissident republicans have been blamed.
In early 2009 a car bomb was found close to the base, which was thought to have been abandoned by dissident republicans.
He did not give specifics about the planned operation, but he gave the name of a dissident republican.
