Police had evidence-gathering resources in Creggan today, Monday 6 April, while an Easter commemoration parade was taking place.
From the beginning of the parade to when it dispersed, a number of participants were observed to be wearing paramilitary-style uniforms, believed to be an offence under the Terrorism Act 2000, and a breach of the Parades Commission determination.
Area Commander of Derry City & Strabane Chief Superintendent Gillian Kearney said "The outcomes of our investigations from previous years illustrates that where offences occur, we will investigate.
“As this is now a live investigation, it would be inappropriate to comment any further.”