PSNI seek more than one person in Lyra McKee murder probe; Mayor of Derry reveals city's heartbreak

PSNI Deputy Chief Constable Stephen Martin has told a press conference in Derry that those responsible for the shooting of 29-year-old journalist Lyra McKee have achieved nothing "other than to plunge a family into grief”.
Speaking at a press conference the Deputy Chief Constable said police also believed more than one person was involved in the shooting.