also the site of a prime-ministerial assassination on 11 May 1812. While in the lobby of the House of Commons, on his way to a parliamentary inquiry, Spencer Perceval was shot and killed by a Liverpool merchant adventurer, John Bellingham. Perceval remains the only British Prime Minister to have been assassinated. The New Palace became the target of Fenian bombs on 24 January 1885, along with the Tower of London. The first bomb, a black bag containing dynamite, was discovered by a visitor on the steps towards the Chapel of St Mary Undercroft. Police Constable (PC) William Cole attempted to carry it to New Palace Yard, but the bag became so hot that Cole dropped it and it exploded. The blast opened a crater in the floor in diameter, damaged the roof of the chapel and shattered all the windows in the Hall, including the stained-glass South Window at St Stephen's Porch. Both Cole and PC Cox, a colleague who had joined him to offer assistance, were seriously injured. A second explosion followed almost immediately in the Commons Chamber, causing great damage—especially to its south end—but no injuries, as it was empty at the time. The incident resulted in the closure of Westminster Hall to visitors for several years; when visitors were re-admitted in 1889, it was under certain restrictions and never while the two Houses were sitting. On 17 June 1974, a bomb planted by the Provisional IRA exploded in Westminster Hall. The explosion and the resulting fire, which was fed by a ruptured gas main, injured 11 people and caused extensive damage. Five years later, a car bomb claimed the life of Airey Neave, a prominent Conservative politician, while he was driving out of the Commons car park in New Palace Yard. The attack occurred on 30 March 1979, one day after the announcement of that year's general election; both the Irish National Liberation Army and the Provisional IRA claimed responsibility for Neave's assassination, but it is now accepted that the former were responsible. The Palace has also been the scene of numerous acts of politically motivated "direct action", which often took place in the Chamber of the House of Commons. In July 1970, a man in the Strangers' Gallery threw two canisters of tear gas into the Chamber to protest against the use of such gas in Northern Ireland; an MP and two members of the House's