The President of the International Committee of the Red Cross, Mirjana Spoljaric Egger, described the humanitarian situation in the Gaza Strip as "hell on earth," warning that supplies at the organization's field hospital will run out within two weeks.

"We now find ourselves in a situation I would have to describe as hell on earth," Spoljaric told Reuters from the committee's Geneva headquarters. "People in many areas have no access to water, electricity, or food."

She added that supplies were dangerously low, "For six weeks nothing has come in, so within two weeks we will run out of the supplies we need to keep the hospital running."

The World Health Organization said supplies of antibiotics and blood bags were running out rapidly. Richard Peeperkorn, the WHO representative in the Palestinian territories, told reporters in Geneva via video link from Jerusalem that 22 of the Strip's 36 hospitals were operating at minimal capacity.

The head of the Red Cross also expressed concern about the safety of humanitarian operations.

"Population movement is very dangerous, but it is especially dangerous for our work," Spoljaric said.