North Kivu during the night of 14 August and killing 64–101 people, many of them by hacking. In October 2017, the ADF was blamed for an attack on a U.N. base that killed two Tanzanian peacekeepers and wounded twelve others in Beni. The same month, ADF fighters killed 22 people, many of them state officials, in the Beni region, when they ambushed a convoy of motorcycles with machetes and guns. Attack Shortly before 5:00 pm on December 7, 2017, a large group of armed individuals wearing Congolese army uniforms appeared at the gate of the MONUSCO base located on the banks of the Semliki River. Expecting Congolese troops, the U.N. peacekeepers let the armed men in who promptly began attacking the base's communications infrastructure, severing connection with reinforcements, although the peacekeepers were able to send a distress call before communications were cut. The Tanzanian peacekeepers returned fire, and ADF reinforcements arrived who outnumbered the peacekeepers. ADF fighters were heavily armed with mortars and rocket-propelled grenades and destroyed many U.N. vehicles, including two armored personnel carriers, an ambulance, and a truck. Fighting lasted until 8:00 pm when ADF fighters withdrew. The attack resulted in the deaths of fifteen United Nations peacekeepers from Tanzania and wounded 53 others. Additionally, one peacekeeper remains missing. A further five Congolese government troops were killed. According to a Congolese army captain, 72 ADF fighters were killed though this number remains unconfirmed. Aftermath and reaction The attack on the Semuliki river MONUSCO outpost was the deadliest attack on peacekeepers in the United Nations' history since twenty-four Pakistani peacekeepers were killed in Somalia in 1993. U.N. Secretary-General António Guterres in a statement condemning the attack said, "I condemn this attack unequivocally. These deliberate attacks against UN peacekeepers are unacceptable and constitute a war crime. I call on the DRC authorities to investigate this incident and swiftly bring the perpetrators to justice. There must be no impunity for such assaults, here or anywhere else." President John Magufuli of Tanzania expressed shock, urged calm, and prayers for the speedy recovery of those injured in the attack. The U.S. Department of State said it was "horrified" by the attack and the department's Bureau of African Affairs expressed its "deepest condolences" to the families of those killed or wounded. References Attacks in Africa in 2017 Battles involving Tanzania 2017 in the Democratic Republic of the Congo December 2017 events in Africa United