Two more people have been arrested over a drugs seizure worth £500,000 in Portstewart, County Londonderry.
The drugs - a mixture of ecstasy and amphetamines - were found on 15 October.
PSNI detectives working alongside officers from Greater Manchester Police arrested a man and woman in Manchester.
Three other people, two men and a woman, arrested on Monday are being questioned. Seven men and a woman have already been charged over the find.