"Loud explosions were heard in the vicinity of Khartoum International Airport. The explosion is believed to have erupted at the airport’s jet fuel depot," a local source said.
Sudan’s armed forces and the rebel Rapid Support Forces again traded blows in the conflict-ravaged city on Saturday, sources said.
The rival militaries have been fighting for control of the North African country since mid-April, displacing more than 4.5 million people both inside and outside Sudan, according to UN figures. Thousands are thought to have been killed or injured.