An Indonesian soldier with the United Nations peacekeeping mission in the Democratic Republic of Congo was killed and another injured in a militia attack Monday night in the east of the country, the UN said.

Their patrol was attacked about 20 kilometers from the town of Beni, in the province of North Kivu, Sy Koumbo, a communication officer with the MONUSCO peacekeeping force, told AFP on Tuesday.

“A Blue Helmet is dead and another is injured but not seriously. He is in stable condition,” she said.

In a statement, MONUSCO chief Leila Zerrougui condemned the attack, which she said was carried out by “suspected members of the ADF”, the Allied Democratic Forces, a notorious armed group in eastern the DRC.

The soldier had been involved in a bridge construction project in the Hululu area, she said.

The ADF is a predominantly Muslim movement born in neighboring Uganda in the 1990s, opposed to the regime of Ugandan President Yoweri Museveni.

In 1995 it moved to the DRC, which became its base of operations, although it had not carried out attacks inside Uganda for years.

According to UN figures, he has killed more than 500 people since late October, when the Congolese army launched an offensive against him.

The ADF killed 15 UN soldiers at their base near the Ugandan border in December 2017, and seven in an ambush in December 2018.