Explosions have been heard in the Sudanese city of Port Sudan as a paramilitary force targeted the de-facto capital of the country's military-led government for the third consecutive day. Thick black smoke could be seen at dawn on the skyline of the previously safe city where thousands of people fleeing the two-year civil war have sought refuge.

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.

Multiple explosions have been heard and a huge fire seen in Port Sudan, where hundreds of thousands of displaced people have sought refuge.