A group of men attacked two houses and threatened residents at Mountcollyer Avenue in the Tiger’s Bay area.
Windows in two of the houses were smashed on Monday night and one man was reported to have been carrying a pick axe.
There was a second incident at one of the houses on Tuesday.
A Polish woman living in one of the houses said did feel safe there.
As part of a follow-up investigation, the 20 year-old was detained in the north Belfast area this morning and taken to Musgrave PSNI station for questioning.