On 11 July 1963, the apartheid police raided Liliesleaf Farm in Rivonia, arresting the leadership of Umkhonto we Sizwe. Among those arrested were Walter Sisulu, Govan Mbeki, Raymond Mhlaba, Ahmed Kathrada, Lionel Bernstein and Bob Hepple. More arrests followed shortly after this incident, including Arthur Goldreich, Andrew Mlangeni, James Kantor, Dennis Goldberg, Harold Wolpe and Elias Motsoaledi.