"The use of chemical weapons is a war crime. The evidence we have gathered is credible and portrays a regime that is intent on directing attacks against the civilian population in Darfur without any fear of international retribution," the report issued by the Amnesty International reads.
According to the watchdog's estimates, reportedly based on satellite imagery, over 200 in-depth interviews with survivors and expert analysis of images of the victims, up to 250 people may have died as the result of the attacks, with many children among casualties.
The conflict in Darfur began in the 1980s and escalated dramatically in 2003, when non-Arab tribes revolted against the Arab-led government of President Omar Bashir. In 2011, the Sudanese government and Liberation and Justice Movement, one of the rebel groups, signed a peace deal in Doha.
About 300,000 people have been killed by the violence in the region and another 2.5 million people were displaced, according to the United Nations (UN).
