Derry man charged with 21 sexual offences which include the alleged rape of a child Defendant returned for trial to local crown court Derry courthouse at Bishop Street. Reporter: '); '); A Derry man will be arraigned on charges of raping and sexually assaulting children at a court sitting next month. Joshua Adam Olphert, 25, who is currently on remand at HM Prison Maghaberry, faces 21 charges linked to sexual offences. Those include raping a child, sexually assaulting a child, engaging in a sexual act in the presence of a child and taking an indecent photo of a child. It is alleged that the offences were committed against two children and took place between September 2009 and July 2017.