At least 15 people were killed and dozens of others injured during two days of demonstrations in Congo’s east against the United Nations mission in the country, officials said Tuesday. The United Nations said one peacekeeper from Morocco and two international policemen from India serving with the U.N. peacekeeping force were slain and a policeman from Egypt was injured at the U.N. base in Butembo in North Kivu province when “violent attackers snatched weapons from Congolese police” and fired on U.N. personnel. U.N. Secretary-General Antonio Guterres strongly condemned the Butembo attack and violence targeting multiple U.N. bases across North Kivu since Monday, U.N. deputy spokesman Farhan Haq said. Haq said that on Tuesday “hundreds of assailants” attacked bases of the U.N. force in Goma and other parts of North Kivu, “fueled by hostile remarks and threats made by individuals and groups against the U.N., particularly on social media.’” Read: Infants, patients among 13 killed in Congo hospital attack “Mobs are throwing stones and petrol bombs, breaking into bases, looting and vandalizing, and setting facilities on fire,” Haq said. “We are trying to calm things down” including by dispatching quick reaction forces but there is no evidence the violence has ended. In addition, Haq said at least four incidents targeted the residences of mission staff, who have now been relocated to U.N. camps. A mob also tried to enter the compound of the U.N. Development Program Tuesday but was rebelled by security guards, he said.