Yes, that happened.
Abhorent.
I mentioned the recent murder only because it illustrates why it is so hard to get convictions.
Of the hundreds of murders in the troubles, half have no convictions.

Finally, although there is no hard proof against an individual for a conviction in court, there is ample evidence for reasonable suspicion that the individuals involved in the Northern Bank raid were acting for and on behalf of the Provisional IRA.

As someone else said, even the dogs in the street know who did it.