Humanitarian aid was seen being airdropped by international donors over the Gaza Strip on Tuesday, as Palestinians in the enclave continue to struggle with severe food shortages caused by Israel's blockade.

Aid groups have criticized the airdrop method, saying it is neither effective nor safe in such a densely populated area.

They warn that much of the aid does not reach those most in need — with some packages falling into the sea or landing in the so-called red zones.

The latest airdrops come a day after Hamas said it has accepted a new proposal from Arab mediators for a ceasefire.

Members of the United Nations human rights and humanitarian affairs agencies warned on Tuesday that the trickle of aid entering Gaza is insufficient to avert widespread starvation.

"The risk of starvation is everywhere in Gaza. This is a direct result of the Israeli government's policy of blocking humanitarian aid,” Thameen Al-Kheetan, spokesperson at the UN Human Rights Office (OHCHR) told reporters in Geneva.

The UN said on Monday that hunger-related deaths continue to be reported in the Strip, including among children.