A resident of Khartoum, the capital of Sudan, informed the BBC that she had run out of drinking water as violence between opposing forces has continued there for a fourth day.
“This morning we ran out,” Duaa Tariq admitted, adding that she was reserving one bottle specifically for her two-year-old child.
There are ongoing efforts to persuade the army and the paramilitary Rapid Support Forces (RSF) organization to enforce a 24-hour ceasefire.
In certain residential parts of the capital, the RSF has started plundering.
Residents of the Khartoum 2 area told the BBC that the RSF militia had been going home-to-home in the neighbourhood demanding water and food.
Heavy bombardments and black smoke can be seen around the airport, which is in the centre of Khartoum and right next to the military headquarters, as tanks are reported on some streets.
Residential areas surround the airport and staff and patients at a nearby cancer hospital say there are trapped by the fighting.
A female patient at Al-Zara Hospital told the BBC on Monday the situation was deteriorating as there were no medicine or food. The hospital is already overcrowded as it took in patients from another hospital that had come under attack by the RSF.
Lack of supplies is a problem countrywide, in up to seven states, according to the World Health Organization (WHO).
“Now most of the hospitals are reporting [being] out of medical supplies, blood bags, oxygen and other many important medicine and surgical kits,” WHO’s Sudan representative Dr Nima Saeed Abid told the BBC’s Newsday radio programme.
UN special envoy to Sudan Volker Perthes has told the BBC that he is in daily contact with the two generals whose forces are fighting for control, but he says they are not talking to each other.
Sudan’s de facto leader, Gen Abdel Fattah al-Burhan, told CNN earlier on Tuesday the ceasefire would start at 16:00 GMT. Some elements of the army have denied this.
RSF head Mohamed Hamdan Dagalo, who is better known as Hemedti and is also Sudan’s deputy leader, tweeted that he had approved a ceasefire to ensure the evacuation of wounded civilians, but said previous deals to halt fighting had been violated.
Mr Perthes said agreements to pause the fighting for several hours on Sunday and Monday were not fully observed.
The Red Cross said it was receiving multiple calls for help from people trapped in their homes by the fighting – the city has an estimated population of 10 million residents.
But the aid group said providing humanitarian support was “almost impossible”, amid airstrikes and artillery attacks.
Around 185 people have been killed and more than 1,800 injured since the fighting erupted on Saturday, according to the UN.
For Ms Tariq the only safe place to be in her home is “one tiny corridor” where “we’re laying and spending the whole day” on one shared mattress.
“Most of the people [that] died, died in their houses with random bullets and missiles, so it’s better to avoid exposed places in the house” like windows, she said.
There is not sufficient light because there is no electricity, but she goes to a neighbour’s flat to charge her phone as they have a power bank.
“Last night I wasn’t able to sleep and I feel very sick,” she added.
A group in her community were forming a “crisis room,” and had “promised to provide food and water for those in need”, she said.
People are also organising anti-war campaigns online, she added.