Germany, France and Britain on Wednesday called on Israel to stop blocking humanitarian aid into Gaza, warning of "an acute risk of starvation, epidemic disease and death".

"This must end," their foreign ministers said in a joint statement. "We urge Israel to immediately re-start a rapid and unimpeded flow of humanitarian aid to Gaza in order to meet the needs of all civilians."

After 18 months of devastating war and an Israeli blockade on aid since March 2, the UN has warned of a dire humanitarian situation for the 2.4 million inhabitants of the Palestinian territory.

Israel has accused Palestinian militant group Hamas of diverting aid, which it denies.

The heads of 12 major aid organisations warned last Thursday that "famine is not just a risk, but likely rapidly unfolding in almost all parts" of the coastal territory.

"The Israeli decision to block aid from entering Gaza is intolerable," the three ministers said Wednesday. They also criticised Defence Minister Israel Katz for "recent comments politicising humanitarian aid" and described Israeli plans to remain in Gaza after the war as "unacceptable".

"Humanitarian aid must never be used as a political tool and Palestinian territory must not be reduced nor subjected to any demographic change," they said.

Meanwhile, Palestinian president Mahmud Abbas on Wednesday urged Hamas to free all hostages in Gaza, saying their captivity provided Israel with "excuses" to attack the territory, as rescuers recovered charred bodies from an Israeli strike.

At least 25 people were killed across the Gaza Strip by Israeli strikes, while Germany, France and Britain urged Israel to end its blockade on aid entering the besieged territory.

Talks aimed at reaching a new ceasefire have so far failed to produce any breakthroughs, and a Hamas delegation is currently in Cairo for renewed negotiations with Egyptian and Qatari mediators.

"Hamas has given the criminal occupation excuses to commit its crimes in the Gaza Strip, the most prominent being the holding of hostages," Abbas said at a meeting in Ramallah, the seat of the Palestinian Authority (PA) in the Israeli-occupied West Bank. "I'm the one paying the price, our people are paying the price, not Israel. My brother, just hand them over."

On the other hand, Israel's military said on Wednesday that they likely intercepted a missile launched from Yemen, with the Iran-backed Huthi rebels saying they had launched the attack and claiming it had been successful.

Shortly after 4:00 am local time (0100 GMT), the Israeli army announced that the missile triggered air raid sirens in Haifa and other communities in northern Israel.