The UN force in the Central African Republic on Wednesday said a peacekeeper was killed in the country's north, where rebel groups regularly clash with the army and its Russian Wagner group mercenary allies.
Soldiers from the Tunisian contingent of the MINUSCA force were on patrol some 50 kilometres (30 miles) from the town of Ndele on Tuesday when "unidentified armed elements opened fire killing a peacekeeper".
MINUSCA chief Valentine Rugwabiza said the killing could constitute a war crime and urged the CAR authorities to "identify the perpetrators of these acts so they can be quickly brought to justice", a statement read.
Two UN peacekeepers have now been killed in the Central African Republic since 2024.
Last year, a Cameroonian soldier was killed when a mine exploded in the northwest of the country.
MINUSCA is made up of more than 17,000 military and police personnel as well as civilians responsible for restoring security in the restive country.
The Central African Republic is one of the poorest countries in the world and has been hit by a succession of civil wars, coups and authoritarian regimes since its independence from France in 1960.
The country still regularly suffers attacks by rebel groups, particularly on roads.
The groups oppose the government, which is backed by the Wagner group and Rwandan forces.