Palestinian Prime Minister Mohammad Shtayyeh has denied knowledge of a planned flight from the United Arab Emirates to Israel to deliver medical aid to Palestinians, Reuters reports.

Shtayyeh made the remarks on Tuesday, casting doubt over whether the Palestinians, long at odds with Israel over occupied land they seek for a state, would accept the supplies after they rejected a similar shipment last month, saying it had not been coordinated with them.

"If any country, whether Arab or European or international country wants to help us, we welcome that. We don't say no - as long as it is not conditional and as long as it is fully coordinated with us," Reuters quotes Shtayyeh.

Palestine views with sensitivity any attempts to direct aid or assistance to areas under its limited self-rule in the Israeli-occupied West Bank without its expressed knowledge and coordination.

Etihad Airways earlier said it would operate a rare, second flight to Israel carrying the medical aid on a cargo-only service from Abu Dhabi. The UAE foreign ministry is yet to comment on the development.

State-owned Etihad on May 19 operated the first known flight by a UAE airline to Israel. It transported supplies to help the Palestinians combat COVID-19 after the United Nations Special Coordinator for the Middle East Peace Process (UNSCO) coordinated a 16-tonne shipment from the UAE.