M23 rebels guard outside the South Kivu province administrative office, at the centre of east Congo's second-largest city, Bukavu, Sunday, Feb. 16, 2025. (AP Photo/Janvier Barhahiga)2025-02-18T11:55:48Z DAKAR, Senegal (AP) The U.N. human rights chief accused Rwanda-backed rebels who seized a second major city in eastern Congo of killing children and attacking hospitals and warehouses storing humanitarian aid.Volker Trk said in a statement Tuesday that his office confirmed cases of summary execution of children by M23 after they entered the city of Bukavu last week. We are also aware that children were in possession of weapons.He provided no details or did not refer to specific events, but U.N. agencies have previously accused both Congolese government forces and the rebels of recruiting children. The United Nations Human Rights Council earlier this month launched a commission that will investigate atrocities, including rapes and killings akin to summary executions committed by both sides since the beginning of the year.The M23 rebels on Sunday captured Bukavu, the city of 1.3 million people, after seizing Goma, 100 kilometers (62 miles) to the north last month. At least 3,000 were reported killed and thousands displaced in the Goma fighting. Early Tuesday, the bodies of over 20 people were recovered in Bukavu, Franois Moreillon, from the International Committee of the Red Cross, told The Associated Press. The M23 is the most prominent of more than 100 armed groups vying for control of eastern Congos trillions of dollars in mineral wealth thats critical for much of the worlds technology. The rebels are supported by about 4,000 troops from neighboring Rwanda, according to U.N. experts. Rwanda accuses Congo of enlisting Hutu fighters responsible for the 1994 genocide of minority Tutsis and moderate Hutus. M23 says its fighting to protect Tutsis and Congolese of Rwandan origin from discrimination and wants to transform Congo from a failed into a modern state though critics say its a pretext for Rwandas involvement. Unlike in 2012, when the M23 briefly seized Goma and withdrew after international pressure, analysts have said the rebels this time are eyeing political power.The decades-long fighting has displaced more than 6 million people in the region, creating the worlds largest humanitarian crisis.