Murphy was allegedly involved with the South Armagh Brigade of the IRA before being elected Chief of Staff by the IRA Army Council . Toby Harnden ( ex-correspondent for the '' Daily Telegraph '' ) named him as planning the Warrenpoint ambush of 1979 , in which 18 British soldiers were killed , and he was also allegedly implicated in the Mullaghmore bombing the same day , which killed four people ( including two children and Louis Mountbatten , 1st Earl Mountbatten of Burma ) . Murphy was involved in smuggling huge stockpiles of weapons from Libya in the 1980s and was a member of the Army Council that decided to end its first ceasefire with the 1996 Docklands bombing in London that killed two men
1996 Docklands bombing
1996 Docklands bombing
Thomas Murphy (Irish republican)