He is being detained at Drogheda Garda station.
A man in is 40s has been arrested this morning as part of the investigation into the murder of Drogheda teenager Keane Mulready-Woods.
In January, the 17-year-old's remains were discovered in a sports bag dumped in a residential area in Coolock and in a burnt out car abandoned in Drumcondra.
It's believed the murder is related to a gang feud Drogheda.
The man who has been arrested is currently being detained at Drogheda Garda station and can be held for up to 7 days.