This live blog has now ended. Follow The New Arab on Twitter, Facebook and Instagram for the latest news on the situation in Sudan.
Hopes of a ceasefire between Sudan's military and the rival Rapid Support Forces have been dashed as the leaders of both sides refuse to negotiate with the other.
Speaking separately to Al Jazeera, both army chief Abdel Fattah al-Burhan and RSF head Mohamed Hamdan 'Hemedti' Dagalo said that they refused direct talks with the other side.
Earlier on Thursday, residents of Sudan's capital reported renewed heavy gunfire over central Khartoum and some other areas as many tried to flee the city on the eve of the Eid holiday marking the end of the holy month of Ramadan.
Khartoum and its sister cities Omdurman and Bahri have been rocked by fierce battles this week between the army and the paramilitary Rapid Support Forces (RSF) that have shut the city down, stranding many and causing food supplies to run short.
Nearly 300 people have been killed over the past five days, according to the UN's health agency.
Early on Thursday, smoke and fires that had risen from the city in previous days had abated, live TV feeds over Khartoum showed, before the fighting erupted once again.
Gunfire was heard in Bahri and residents reported violent clashes west of Omdurman where they said the army had moved to block the arrival of RSF reinforcements.
Both sides said earlier they would respect a 24-hour ceasefire that was due to come into effect at 6 pm local time (1600 GMT) on Wednesday, but was quickly broken by renewed fighting.
The RSF issued a statement about the breakdown in the truce, saying it came under attack in Omdurman and inflicted losses on the army in response, including shooting down two helicopters.
The RSF's claims could not be independently verified.
Some of the most intense fighting has been focused around the compound housing the army HQ and the residence of Sudan's military ruler, General Abdel Fattah al-Burhan.
The army controls access to Khartoum and appeared to be trying to cut off supply routes to RSF fighters, residents and witnesses said.
International powers, struggling to evacuate citizens after the airport and several districts housing embassies were caught up in the violence, have been pushing repeatedly for truces, to little effect.
More people have been leaving the capital with most able to pass but some stopped at checkpoints, according to residents and social media posts.