United Nations Secretary-General Ban Ki-moon has appointed a new head of the UN peacekeeping mission in the Central African Republic (CAR) following the dismissal of the previous head over yet another sexual abuse scandal by UN forces.

The appointment of Parfait Onanga-Anyanga of Gabon as his acting special representative for CAR as well as the head of the UN peacekeeping mission in the troubled country (MINUSCA) was announced in a Friday statement by Ban’s spokesperson.

According to the statement, Onanga-Anyanga brings with him several years of experience with the UN in conflict-affected areas, including a position as head of the UN office in Burundi, having served most recently as the assistant-secretary-general and the system-wide senior coordinator on Burundi, not to mention his role as the coordinator of the UN headquarters' response to the Boko Haram crisis.

Onanga-Anyanga will replace Senegalese diplomat Babacar Gaye who resigned Wednesday upon Ban’s request after the UK-based rights group Amnesty International announced that it possessed evidence suggesting that UN peacekeepers in the CAR had raped a 12-year-old girl and apparently indiscriminately killed a 16-year-old boy and his father during a recent operation to arrest a former rebel leader in the capital, Bangui.

Similar claims of child abuse were previously made against other members of the UN mission to CAR.

“When the United Nations deploys peacekeepers, we do so to protect the world’s most vulnerable people in the world’s most desperate places,” Ban said last week, adding, “I will not tolerate any action by people who replace trust with fear.”

There are also allegations of sex abuse by French troops, with reports saying they sexually abused starving children in the Central African Republic in exchange for food. Paris says it is still investigating the claims.

“I cannot put into words how anguished and angered and ashamed I am by recurrent reports over the years of sexual exploitation and abuse by UN forces…Enough is enough,” Ban said.

The Central African Republic has been troubled by turmoil since December 2013, when Christian armed groups launched coordinated attacks against the country’s Muslim population, seeking revenge for the ouster of the government in March of that year by the mostly Muslim Seleka group.