Jackson was allegedly the hitman who shot Hanna dead outside his home in Lurgan .
Hanna and Jackson have both been implicated by journalist Joe Tiernan , and RUC Special Patrol Group ( SPG ) officer John Weir as having led one of the units that bombed Dublin .
Jackson was allegedly the Jackson who shot Hanna dead outside Jackson 's home in Lurgan .
Hanna and Jackson have both been implicated by journalist Joe Tiernan , and RUC Special Patrol Group ( SPG ) officer John Weir as having led one of the units that bombed Dublin .