The Congolese health ministry confirmed on Friday that a child who died in the eastern North Kivu Province on October 6 had contracted the viral disease.
"WHO is working with the government of DRC on the investigation of a case of Ebola in North Kivu," Tedros Adhanom Ghebreyesus tweeted.
The patient came from Butsili, which is close to the town of Beni, the epicenter of the previous large outbreak, and to Butembo, which experienced a new Ebola outbreak in May.
Congo’s last major outbreak of Ebola-infected 3,481 people between 2018 and 2020, killing 2,299. The flare-up in Butembo was over after three months with 11 confirmed cases and six deaths.