Michael Devoy was shot dead in 2014 and his sister was killed in latest Ballymun attack
Detectives say they are following 300 lines of inquiry in Ballymun investigation
YOU MAY ALSO LIKE...
How does a post-Brexit world shape the identity and relationship of these islands
Inquests into the nightclub fire that led to the deaths of 48 people
Weddings, Births, Deaths and other family notices