Images on social media shared by the committee and others purported to show dozens of bodies wrapped for burial and mass graves being dug.
Officials from the RSF shared footage showing its troops standing around the burning wreckage of the plane which they said they had shot down in al-Malha, north of al-Fashir, in the early hours of Monday.
But following his defection on Sunday, large numbers of RSF soldiers streamed into the region, in what activists described as revenge, reporting displacement, looting and killings.
The conflict has displaced more than 10 million people, driven parts of the country to extreme hunger or famine, and drawn in foreign powers that have supplied both sides with material support.
The number of displaced people around the world has more than doubled in the past decade.
The army and the RSF have been locked in conflict for nearly 18 months, triggering a profound humanitarian crisis in which more than 10 million people have been driven from their homes.
Emergency Lawyers, a Sudanese human rights group, said hundreds of people had been killed in such strikes across the country.
The Egyptian foreign ministry later issued a statement in which it denied Hemedti's accusations regarding the participation of Egyptian aviation in the ongoing war in Sudan.
The Egyptian foreign ministry denied Hemedti's accusations regarding the participation of Egyptian aviation in the ongoing war in Sudan.
International humanitarian agencies, which have been unable to get food aid to parts of Sudan at risk of famine, have ramped up support for such groups.
Nearly 18 months have caused the world's biggest internal displacement crisis and more than 25 million people - over half the population of Sudan- are in desperate need of food and healthcare.
The war began in April 2023 as the army and the RSF jostled to protect their power and wealth ahead of a planned political transition towards civilian rule and free elections.
War erupted in mid-April last year from a power struggle between the Sudanese army (SAF) and the paramilitary Rapid Support Forces ahead of a planned transition to civilian rule.
The health crisis in South Darfur is one of the worst of its kind globally and is being driven by the conflict between military factions that broke out in April last year, MSF said in a report.
On Sudan, Guterres called out the "brutal power struggle" between the Sudanese army and the paramilitary Rapid Support Forces that erupted into war in mid-April last year ahead of a planned transition to civilian rule.
Bashir was convicted of corruption and illicit financing and faced other legal trials before war broke out in April 2023
Dr Tedros urged global leaders to "wake up" and assist Sudan in escaping its current crisis.
Floodwaters from heavy rains that started surging in earlier this month have brought devastation across a country already shattered by 500 days of fierce fighting between the army and paramilitary Rapid Support Forces.
The war in Sudan has produced waves of ethnically driven violence blamed largely on the RSF. The RSF denies harming civilians and attributes the activity to rogue actors.
The Sudanese community in Rwanda has been growing, with students joining universities in the East African country.