Hundreds of civilians in the besieged Syrian city are on the brink of death, said Stephen O'Brien, U.N. under-secretary-general for humanitarian affairs,
"... we found some 400 people who must be evacuated IMMEDIATELY for medical treatment or face dying #Syria," O'Brien tweeted
Madaya has been ravaged by starvation in the Syrian civil war. The rebel-held city has been choked off by the regime and landmines.
On Monday, the city of 40,000 received its first shipment of foreign aid since October. The sight of food trucks brought starving residents to tears, a U.N. source told CNN.
The U.N. Refugee Agency said 49 vehicles were delivering aid to Madaya.
According to SANA, Syria's state news agency, 65 trucks loaded with aid supplies entered Madaya and two other besieged towns, Foua and Kefraya.
"It's heartbreaking to see so many hungry people," said Sajjad Malik, the UNHCR representative in Syria. "It's cold and raining, but there is excitement because we are here with some food and blankets." Read more on edition.cnn.