After numerous attempts on his life, Chief Secretary for Ireland William Edward Forster resigned in protest of the Kilmainham Treaty. The Invincibles settled on a plan to kill the Permanent Under Secretary Thomas Henry Burke at the Irish Office. The newly installed Chief Secretary for Ireland, Lord Frederick Cavendish, was walking with Burke on the day of his arrival in Ireland when they struck, in Phoenix Park, Dublin, at 17:30 on 6 May 1882. Joe Brady attacked Burke, followed in short order by Tim Kelly, who knifed Cavendish. Both men used surgical knives.
