Tadgh Farrell and Mary Holt were killed in the arson attack in December.
The man thought to be behind the firebomb attack that led to the death of a four year old boy and his grand-aunt in Offaly is now in jail.
The Irish Sun is reporting he has been sent to the Midlands Prison in Portlaoise on a criminal damage charge.
The Westmeath man had his own home petrol-bombed last year during a row with a separate rival faction in Kildare.
He's believed to run a crime group linked to several killings including that of four year old Tadgh Farrell and 60 year old Mary Holt in Edenderry in December.
Detectives suspect the petrol bomb attack was sparked by a prison assault on the gang boss' associate.
Aaron Holt has since been moved on from the Midlands Prison after being recently caught with three mobile phones.
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