The Justice Minister says the suspected involvement of dissident republicans following the eviction of a Co Roscommon family from their home last week is a "very sinister development".
Anthony McGann, along with his brother and sister, were evicted from their property near Strokestown just over a week ago, following a court order.
The eviction sparked an angry response following the involvement of a private security firm, understood to be from Northern Ireland.
A group of over 20 men then stormed the house on Sunday morning, injuring 8 security men with at least 6 vehicles burnt out.
Justice Minister Charlie Flanagan says criminals can't be allowed to take the law into their own hands.
