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

Explosions and fires rocked Sudan’s main port city and wartime capital Port Sudan on Tuesday, a witness said, part of a days-long drone assault that has torched the country’s biggest fuel depot, damaging the most important gateway for foreign aid.

Port Sudan is the main entry point for humanitarian aid into Sudan. A spokesman for UN chief Antonio Guterres said the drone strikes 'could lead to large-scale civilian casualties and further destruction of critical infrastructure.