The international aid group now wants an impartial investigation into the deaths, but didn't specify who should lead the effort.
Australia is also backing an independent investigation into the death of aid worker Zomi Frankcom, who was killed when the convoy she was in, delivering food and supplies to the Gaza strip, was hit by an Israeli air strike in 2024.
Prime Minister Anthony Albanese described Israel's response as 'nothing to see here' and said Australia and Frankcom's family deserved better.
Doctors Without Borders asked Israel's military to investigate an attack on a Gaza City convoy in November 2023 and a strike on the organisation's shelter in Khan Younis in February 2024. Israel has announced that it wouldn't launch criminal investigations into the two cases, in which troops killed the organisation's employees.
The decision by Israel's military shows "there is no prospect of accountability within the Israeli legal system for the killing of our staff, just as there has been no accountability for Israel's ongoing genocide against Palestinians," Doctors Without Borders said in a statement that cited 15 staff and 1,700 healthcare workers killed in Gaza since October 2023.
Israel denies accusations of genocide and war crimes and says it's targeting Hamas after the militant group's attack on southern Israel that killed 1,200 people and took 251 hostage on October 7, 2023. Israel blames civilian deaths on Hamas, because it operates in populated areas in the tiny, overcrowded Gaza Strip.
A mass funeral in Gaza City on Thursday remembered 50 Palestinians killed in Israeli strikes in the opening months of the war, but whose remains were only recently recovered from under rubble.
Dozens of mourners carried the remains, draped in Palestinian flags, through debris-strewn streets before lowering them into graves.
"We were able to recover them after three years of war, after three years of anguish, pain and torture. We were able to recover them, and dignify them in their final resting place. We were able to pray over them and bury them," said Lina Karam, who lost her father and other members of her family.
The nearly three-year war has killed more than 73,400 Palestinians, according to Gaza's Health Ministry. The ministry, which was part of the Hamas-run government, maintains detailed records viewed as generally reliable by UN agencies and international organisations. It doesn't distinguish between civilians and militants, but says women and children make up around half of the toll.
Meanwhile six European countries along with Canada have condemned the latest development in a contentious Israeli settlement project near Jerusalem that would effectively cut the occupied West Bank in two.
Israel's Ministry of Construction and Housing has issued a tender for constructing several compounds with more than 1,200 homes in total in an open tract of land east of Jerusalem. It's the latest step in a project under consideration for more than two decades, which critics say would prevent the establishment of a contiguous Palestinian state in the territory.
The joint statement from the leaders of the UK, France, Germany, Italy, the Netherlands, Norway and Canada said international law is clear that the settlement is illegal and noted "unprecedented levels of violence by settlers against civilians."
"We urge the government of Israel to retract these plans immediately and end its expansion of settlements in the West Bank. Not only will they take us further from peace, but they further undermine Israel's international standing," the countries wrote.
Egypt and Jordan also condemned Israel's move.
Israeli Foreign Minister Gideon Saar responded by defending "the historic right of the Jewish people to re-establish their national home in the Land of Israel — including in the area in question." Saar criticised the UK government for "blaming only Israel while ignoring Palestinian extremism."
