Three Congolese doctors have been arrested in the Democratic Republic of Congo over the killing of a World Health Organization medic.
Cameroonian doctor Richard Mouzoko was shot dead in April at a hospital in Butembo, where he was treating Ebola patients.
The motive for the attack is unclear.
More than 1,800 people have died from the Ebola virus in the past year.
Senior military prosecutor Lt Col Jean-Baptiste Kumbu said the three Congolese doctors will be prosecuted for “terrorism” and “criminal conspiracy” while the fourth doctor was still at large.
The current outbreak in eastern DR Congo began in August last year and is the biggest of the 10 to hit the country since 1976, when the virus was first discovered.