A number of suspects have also been released on bail
Footage from one of the incidents was circulated online
The PSNI had previously said they were investigating a number of incidents as “sectarian hate crimes” after several reports including assault, criminal damage and disorder.
Video footage of one incident – appearing to show two boys being set upon by a gang of youths – was circulated online, while a bus carrying children back from a football tournament was attacked in the Irish Street area.
Chief Inspector Pearce said: “One man aged in his 20s was arrested on suspicion of Grievous Bodily Harm following a report of an assault in the Bonds Hill area on Monday April 28.
“He remains in police custody at this time, assisting with enquiries.
“Two teenage males were arrested in relation to a second report of an assault which took place in the Caw Close area Saturday 26th April. They were both arrested on suspicion of affray, and later released on bail to allow for further police enquiries.
“Two 18-year-old males arrested on suspicion of criminal damage on Monday April 28, following a report of criminal damage caused to a vehicle on Duke Street in the Waterside area on Sunday evening, April 27, were released on bail to allow for further police enquiries.”
Chief Inspector Pearce continued: “Our enquiries remain ongoing, and we will be continuing to review all evidence, and make further arrests, in the coming days and weeks.
“We would continue to appeal to anyone who has any information, or who witnessed the incidents or has relevant footage, including dash cam, to get in touch on 101, quoting reference 989 of 27/04/25.
“A report can be submitted online using the non-emergency reporting form via http://www.psni.police.uk/makeareport/.
“You can also contact Crimestoppers anonymously on 0800 555 111 or online at http://crimestoppers-uk.org/.”