Two men, aged 43 and 37, have been arrested as part of the investigation into the murder of Kevin McDaid and the attempted murder of Damien Fleming in Coleraine.
Mr McDaid, a 49-year-old Catholic, was attacked by loyalists last month after a row over republican flags in the Heights area.
Ten men have so far been charged in connection with the incident, six of them with the murder of Mr McDaid.
