The arrest was made in Dunleer, Co. Louth on Friday morning.
Gardaí have arrested an 18-year-old male in Dunleer, Co. Louth in connection with the murder of Cameron Reilly.
Cameron's remains were found, by a man out walking his dog, following his death on 26 May.
He is believed to have been strangled to death.
The man is currently detained under Section 4 of the Criminal Justice Act, 1984 at Drogheda Garda station.
Investigations are ongoing.
