In September 2009 Museveni refused Kabaka Muwenda Mutebi, the Baganda king, permission to visit some areas of Buganda Kingdom, particularly the Kayunga district. Riots occurred and over 40 people were killed while others remain imprisoned to this date. Furthermore, 9 more people were killed during the April 2011 "Walk to Work" demonstrations. According to the Humans Rights Watch 2013 World Report on Uganda, the government has failed to investigate the killings associated with both of these events.