James Monaghan, Niall Connolly and Martin McCauley, recently convicted of training Colombia's Marxist FARC (Revolutionary Armed Forces) rebels in "explosives and terrorist techniques" skipped town while out on bail during an appeal of said conviction.
You can read the BBC story here.
I don't know which flavor of IRA they are -- the article mentions seizing rebel grenades that were copies of those produced by the PIRA, but that only speaks to where these three learned their explosives techniques.
I am, however, amazed that they were even allowed bail (and that they weren't "shot resisting arrest" in the first place).