U.N. agencies said on Tuesday the two main crossings into the southern Gaza Strip remained shut, virtually cutting off the Palestinian enclave from outside aid with few stocks positioned inside.

The global agency's humanitarian office spokesperson Jens Laerke told journalists Israel had shut both the Rafah and Kerem Shalom crossings for aid and people as part of its military operation in Rafah, where around 1 million uprooted people are sheltering.