Fairfield based nonprofit Save the Children says Tuesday was the deadliest day in Gaza as the war continues. 

The organization said at least 2,000 children have been killed, volunteers are calling it a humanitarian catastrophe. 

Janti Soeripto, president and CEO of Save The Children U.S. says the organization has 24 of their own on the ground in Gaza.

"We are incredibly concerned, particularly for the 1 million children that live on the Gaza Strip," said Soeripto.

Soeripto says since their last communication all 24 are safe and accounted for but adds that what they are witnessing is terrifying.

"What we are seeing is a population that is rapidly running out of water, food essential items, hospitals don't have medicine or any other critical supplies."

They're also close to having no fuel,” Soeripto said. "That means incubators for neonatal babies can't work, over time not enough painkillers to help people get through surgery."

Over the weekend, trucks carrying aid were let into Gaza, but Soeripto says it is most definitely not enough.

"Ours are also there, I'm hopeful that they can also make it through if not already. But again, we need that crossing to be open for longer and more trucks to come through," she said.

Soeripto says it's heartbreaking to see children caught in the middle of this war.

"They have nothing to do with this conflict, they didn't cause it, they have no part in it. Yet they are bearing the brunt of it."

Save The Children has trucks at the border, but is unsure whether their trucks were among the ones that were let in, and they continue to prepare more supplies.