Sudanese military officials say paramilitary fighters unleashed drones on the Red Sea city of Port Sudan, hitting key targets there, including the airport, the port and a hotel.

Sudan's army said its anti-aircraft systems intercepted drones targeting a naval base in the wartime capital Port Sudan on Wednesday. Explosions were heard in the city, though it was not immediately clear whether they were near the Flamingo base.

Amid reports that renewed drone strikes on a key Sudanese aid hub were thwarted late Wednesday, UN Secretary-General António Guterres added his voice to increasingly urgent calls for serious peace negotiations to end more than two years of war in Sudan.