Investigation launched after details of three PSNI officers posted on bus shelter

Police Service of Northern Ireland Assistant Chief Constable Chris Todd said details of three officers was placed on a bus shelter in Co Derry (Liam McBurney/PA)
Police in Northern Ireland have said a poster with details of three serving officers was placed on a bus shelter in Co Derry.
An investigation has been launched into the incident in Chapel Road in Dungiven on Thursday.