In a statement released by his spokesman Stéphane Dujarric, he confirmed the High Representative's concerns about the attacks on the United Nations Interim Security Force for the territory disputed between Sudan and South Sudan.
The text rejected the violence while calling on the governments of both African nations to investigate the attacks with the support of the Peace Mission (called Unisfa in English) to bring the perpetrators to justice.
Attacks on United Nations peacekeepers could constitute war crimes, the note continued.
According to press reports, the region was the scene of another armed incident over the weekend that left more than 50 people dead.
Information Minister Bulis Koch told reporters that the clashes were the result of ethnic conflict in a disputed oil-rich area.
This is the second time this month that the United Nations has warned of an increase in violence in Abyei, whose status is due to the lack of agreement on the exact demarcation of the border since South Sudan split from Sudan.
Therefore, the territory is administered by an administration consisting of officials appointed by the two nations.
At the end of 2023, the region was the scene of fighting that claimed dozens of lives.
In 2011, the United Nations approved the Interim Security Force, which was deployed in June of that year to protect civilians from the impending threat of physical violence.
At the same time, the mission aims to demilitarize the region and restore peace in accordance with the mandate of the Security Council.
His duties include policing the border, which is a hotbed of violence between the north and south, and facilitating the delivery of humanitarian aid.
Unisfa's creation came after the government of Sudan and the Sudan People's Liberation Movement reached an agreement in Addis Ababa, Ethiopia, to demilitarize Abyei and allow Ethiopian troops to control the area.