ONE of the teenagers guilty of murdering schoolgirl Ana Kriegel has launched an appeal against his conviction.
Boy B, who cannot be named for legal reasons, was sentenced to 15 years' detention, with a possible review after eight years.
Boy A was sentenced to life in prison, with the earliest possible review after 12 years.
After being convicted of aggravated sexual assault and murder last month, Boy B has launched an appeal which will now be looked into.
Boy B was accused of luring the 14-year-old schoolgirl from her home in Leixlip to a derelict farmhouse in Lucan where she was killed last year.
Both boys were 13-years-old at the time of Ana's murder.
They had pleaded not guilty to murder but were convicted unanimously by a jury earlier this year, and sentenced last month.
Outside the courtroom following the sentencing, Ana's parents, Geraldine and Patric, led a brief and heartfelt tribute to their daughter.
"Justice has been served for Ana," Patric said.
"The judge has decided on the sentence, and that duty lies with him alone.
"For our part we can only say that forever is not long enough.
"Please remember Ana and keep her in your hearts, somewhere. Thank you."
Ana was adopted from Russia as a baby and raised in Co Kildare.
It's understood that Boy B failed to accept the sentence handed to him and he and his lawyers immediately started planning to lodge an appeal.
It's not clear whether Boy A will decide to follow suit.