Israel is supporting armed groups of Palestinians in Gaza in what it says is a move to counter Hamas. But officials from the U.N. and aid organizations say the military is allowing them to loot food and other supplies from their trucks.

Israel has come under increasing international criticism over the dire humanitarian situation in Gaza, where the UN warned in May that the entire population was at risk of famine.

Israeli troops shot and killed at least eight Palestinians near a humanitarian aid distribution center in the Rafah, Gaza, early Saturday.