The virus derives its name from the 250-km long Ebola river which flows through Congo and at a point is over 60-km from Yambuku, the rural Congolese area where some of the first patients of the disease were reported.
Global Witness has uncovered evidence linking the president's son, Denis Christel Sassou-Nguesso, to the embezzlement of millions of dollars. The Republic of Congo is no stranger to high profile corruption accusations.
The patient was a priest who became infected during a visit to the town of Butembo, 200 km (124 miles) north of Goma, where he interacted with Ebola patients, Congo's health ministry said in a statement.
The officials said the violence, between the Bununu and Batende groups in and around the town of Yumbi in Mai-Ndombe province, flared a few weeks before the country’s presidential election on December 30.
Health experts agree the experimental Ebola vaccine has saved multitudes in Congo, but after nearly a year and some 171,000 doses given, the epidemic shows few signs of waning - over 1700 have died from the disease.