A 19-year-old man has been charged with grievous bodily harm with intent and is expected to appear at Derry Magistrates Court on 15 November.
The charges follow an assault in Newmarket Street in Derry during the early hours of Sunday 22 October.
An 18-year-old woman also arrested in connection with the same incident was released pending a report to the PPS.
Meanwhile, detectives investigating a serious assault in the Carnhill area of Derry on Saturday 21st October, in which a woman sustained head injuries, have arrested a 16 year old male youth on suspicion of assault occasioning actual bodily harm, theft, criminal damage, threats to kill and possession of an offensive weapon. He has been taken into custody where he is assisting officers with their enquiries.