Dozens of buildings have been engulfed in flames in Sudan's capital due to armed clashes between the army and rival forces.
Videos released by Khartoum on Sunday show the oil company's Greater Nile tower burning in its upper floors, an image reminiscent of 9/11 in the US.
"This thing is really painful" reacted to X, Tagreed Abdin, one of the main architects of this modern building.
Air and ground attacks have been reported sporadically in Khartoum and other Sudanese cities since violence erupted in April. According to the UN, more than 1 million people have left the country so far.
Located on the banks of the Nile River, the Greater Nile Oil Company Tower is one of the tallest buildings in Khartoum and the most iconic. The causes of the fire are still unclear, while fortunately no casualties have been reported.