A driver was killed when an airstrike hit two clearly marked World Food Programme (WFP) aid trucks in South Kordofan, Sudan, the UN agency said on Monday.

In a statement on Monday, the agency said the attack occurred early Saturday as the trucks, contracted by the WFP and carrying food commodities, travelled between Dilling and Kadugli.

They were clearly marked as humanitarian vehicles, the UN agency said in a statement.

It added that details regarding the circumstances of the incident and the extent of the damage to the food cargo were still being determined.

The agency called for a prompt and impartial investigation into the incident and urged that those responsible be held accountable.

The attack occurred a day after another WFP truck struck an explosive device in Dilling after delivering food assistance, according to the agency.

“These incidents underscore the increasingly challenging security environment in Sudan and the risks that aid workers face when delivering life-saving assistance to communities in need,” the statement said.

The agency said it remained committed to safely delivering life-saving assistance to millions of people across Sudan who depend on humanitarian support.

Sudan has been embroiled in a war between the Sudanese Armed Forces (SAF) and the Rapid Support Forces (RSF) since April 2023.

It further urged all those involved in the fighting to respect their obligations under international humanitarian law, protect civilians and civilian infrastructure, and ensure safe and unimpeded access for both humanitarian personnel and cargo.