Two 16-year-old girls have been arrested in connection with the murder of Nelson Cheung in Randalstown.
Mr Cheung, 65 who was a restaurateur died after he was attacked and stabbed at Caddy Road near Randalstown, on January 8.
Three men have already appeared in court charged with his murder. They deny the charge.
Police said the teenage girls were arrested near Randalstown on Wednesday morning.