An investigation is under way following reports that one of Ana Kriegel's killers was allegedly assaulted in Oberstown Detention Centre in Dublin over the weekend.
Boy A was handed a life sentence last November for murder and aggravated sexual assault, with a review to take place after twelve years.
Boy B was also found guilty of her murder, but is in the process of appealing his conviction.
Gardaí are investigating an alleged assault on Boy A, after claims he was beaten up by other young offenders in a communal area at Oberstown on Sunday evening.
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