An 18-year-old man has been arrested over the murder of Cameron Reilly.
He was detained on Thursday in connection with the investigation.
He is being held at Drogheda garda station.
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He will appear before Drogheda District Court on Friday morning.
Mr Reilly's body was found on land off the Ardee Road in Dunleer back in May.
A post-mortem revealed that he was strangled to death.
He was last seen with over a dozen friends the night before and gardaí have been investigating reports that there were a number of young people present when he was murdered.