The Irish National Liberation Army (INLA) had said its armed struggle was over in October but its formal decommissioning will come just days after Northern Ireland agreed a deal to take full control of its own police and justice system.
A small but ruthless splinter group, the INLA killed Margaret Thatcher’s Northern Ireland spokesman Airey Neave with a bomb under his car in the House of Commons car park weeks before she was elected Prime Minister in 1979.