Witness accounts, satellite imagery and video footage authenticated and analyzed by Amnesty International confirm that Guinean defence and security forces fired live ammunition at protesters after the disputed presidential election on 18 October.
Many people were killed and injured during demonstrations and riots.
Internet and telephone connections were disrupted or cut on Friday 23 and Saturday 24 October as a news website remains suspended.
Amnesty International is concerned about the silence of the African Union and the Economic Community of West African States (ECOWAS) regarding the extent of human rights violations against Guineans.
Fabien Offner of Amnesty International West and Central Africa bureau tells us more about their findings.