A 31-year-old an has appeared in Court in Romania in connection with the death of Co.Tyrone Teenager Ronan Hughes.
The 17 year old took his own life in June 2015 after being blackmailed into sending indecent images of himself online.
The suspect appeared at Bucharest Municipal Court charged with producing and distributing indecent images of children and blackmail and has been remanded in custody.
PSNI have been liaising with a number of agencies in a variety of jurisdictions as part of the investigation.
Detective Superintendent Gary Reid, from the PSNI says its a complex international investigation.
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A brief hearing and chaotic scenes as Donaldson makes first court appearance