The Battle of the Somme parade took place on Tuesday, 1 July in the Co Londonderry town.Following the disorder, the PSNI initiated Operation Chimera to identify individuals they believed to be involved in offences in the area of Somerset Drive, Pates Lane and Killowen Street.The Operation began on Monday morning following a number of weeks of planning and co-ordination, a PSNI statement said."Monday brought six arrests in total with more expected in the coming days," it continued.There have been eight arrests already in relation to the disorder.On the night of the parade, four youths - two aged 17, one aged 18 and another aged 19 - a 36-year-old man and a 26-year-old woman were arrested for assault and disorderly behaviour.The next day, two men - aged 36 and 47- and a 26-year-old woman were charged with disorderly behaviour.A 27-year-old woman was charged with disorderly behaviour, assault on police, resisting police and provocative behaviour and will appear at Coleraine Magistrates' Court on Wednesday.PSNI Inspector Ian Armour said: "Police are committed to keeping people safe and I believe this operation will lead to more arrests and see people brought before the courts."The vast majority of Coleraine people want to lead positive lives, free from violence and threat. There can be no justification for disorder and this planned operation shows that we are committed to keeping communities safe."We have been planning for Operation Chimera since the first week of July and so were able to make swift arrests. For those arrested yesterday and in the coming days, due legal process will follow and where sufficient evidence exists, we will bring charges or forward files to the PPS."Police will continue to do everything we can to make Coleraine a safer place for everyone."