Police attacked and injured by Derry flag protestors

Police in Derry have been attacked with bottles and missiles during overnight disturbances with one officer suffering injuries.
Last evening  Police issued a number of warnings over a 30 minute period to flag protesters who were blocking roads and obstructing traffic in the Glendermott Road area of Derry.
Police say a number of protesters then attacked them and between 20-30 bottles and other missiles were thrown
Three juvenile males have been arrested.