"They are a direct result of the erosion of the sanctity of international law," Mohamad Hasan told his counterparts from the regional ASEAN bloc.

Mohamad's comments ahead of an ASEAN summit Monday in Kuala Lumpur come as Israel has stepped up its campaign this month in war-torn Gaza.

The bombardment has drawn international criticism, alongside calls to allow in more aid after Israel only partially eased a total blockade imposed on March 2.

"The atrocities committed against the Palestinian people continue to reflect indifference and double standards," Mohamad said.

"ASEAN cannot remain silent," said Mohamad, whose country holds the rotating chairmanship of the bloc.

Foreign ministers from the 10-member association in February asserted their "longstanding support" for Palestinian rights.

Muslim-majority Malaysia has no diplomatic relations with Israel and many in the Southeast Asian country support the Palestinians. 

Kuala Lumpur has channeled donations and humanitarian aid amounting to more than US$10 million to Palestinians in Gaza since the war erupted in October 2023. 

The war was triggered by an attack by Palestinian militant group Hamas on Israel which resulted in the deaths of 1,218 people, mostly civilians, according to an AFP tally based on official figures.

Militants also took 251 hostages, 57 of whom remain in Gaza including 34 the Israeli military says are dead.

Gaza's health ministry said Saturday that 53,901 people, mostly civilians, have been killed in the territory during the war.