Rivalries between two warring groups of UDA men have spilled over into the North's Maghaberry jail.
Feuding loyalists fighting each other had to be separated by prison officers after the clash in a recreation room.
Two inmates were injured and required hospital treatment.
COMMENT RULES: Comments that are judged to be defamatory, abusive or in bad taste are not acceptable and contributors who consistently fall below certain criteria will be permanently blacklisted. The moderator will not enter into debate with individual contributors and the moderator’s decision is final. It is Belfast Telegraph policy to close comments on court cases, tribunals and active legal investigations. We may also close comments on articles which are being targeted for abuse. Problems with commenting? email@example.com