Boy B, one of two teenagers jailed for the murder of Ana Kriégel, has lodged an appeal against his conviction.

Boy B was sentenced last month to 15 years for murder, with a review after eight years. Boy A, his co-accused, was convicted of murder and aggravated sexual assault and was sentenced to life with a review after 12 years for murdering the 14-year-old. There has been no appeal by Boy A.

It can take a year or more for appeals to be heard, although legal sources suggested that the courts may expedite the appeal, given the boy’s age. Lawyers for the boy must make legal submissions in the case before a date is fixed.If that is done quickly and priority is afforded, the case could be heard within six to nine months, one criminal law solicitor said.

Against that would have to be balanced the fact that he is serving a relatively long sentence, with priority for an expedited hearing usually given for appeals where the person convicted may ultimately end up serving their sentence before their appeal is heard.

The jury in the trial agreed with the State’s case that Boy B had lured Ana from her home prior to her murder, where she was attacked and sexually assaulted by Boy A, who was lying in wait.

While he gave many different versions of what happened subsequently to gardaí during his interviews, he eventually said he saw Boy A attacking Ana. Delivering his sentence, Mr Justice Paul McDermott told Boy B he “actively and knowingly” took part in her killing.