The murder of Yvonne Fletcher, a Metropolitan Police officer, occurred on 17 April 1984, when she was fatally wounded by a shot fired from the Libyan embassy on St James's Square, London, by an unknown gunman. Fletcher had been deployed to monitor a demonstration against the Libyan leader Muammar Gaddafi, and died shortly afterwards. Her death resulted in an eleven-day siege of the embassy, at the end of which those inside were expelled from the country and the United Kingdom severed diplomatic relations with Libya.
Between 1980 and 1984 Gaddafi had ordered the deaths of several exiled opponents of his regime; bombings and shootings, targeted at Libyan dissidents, occurred in Manchester and London. Five Libyans thought to be behind the attacks were deported from the UK.