Aid missions to supply Gaza have become increasingly difficult amid reports of continued heavy bombing of the Strip overnight by the Israeli military and intense clashes 'in most areas' with Hamas fighters, UN humanitarians warned on Wednesday.

Locations in the north and south of the enclave were hit as Israeli ground forces also reportedly pushed into central areas, along with the firing of rockets by Palestinian armed groups into Israel, prompting concerns from the UN agency for Palestinian refugees, UNRWA, about the safety of civilians uprooted time and again.