Three men were arrested on Wednesday by police investigating disorder in Larne last month.
A 22 year-old, 30 year-old and 36 year-old were arrested in Carrickfergus and taken to Antrim Serious Crime Suite for questioning.
It brings the total number of people arrested in relation to the incident so far to 15.
A senior police officer blamed the trouble back in March on the south east Antrim UDA.
During the incident a number of houses were attacked in the Ferris Avenue and Knockdhu Park areas by a mob of between 60 and 100 people, some of whom were masked.
One police officer had to be treated in hospital.