Germany on Tuesday urged Israel to carry out a full probe into a strike in the Gaza Strip that killed seven staff from US-based charity World Central Kitchen.
"The Israeli government must investigate this terrible incident quickly and thoroughly," Foreign Minister Annalena Baerbock wrote on X, formerly Twitter.
Also, Poland's deputy foreign minister Andrzej Szejna said that Israel should "compensate" the families of the seven aid workers, including a Polish citizen, killed in an Israeli strike in Gaza.
"The authorities should think about who should be held criminally responsible for pressing a certain button and how to compensate the families of the victims -- even if it's impossible to do so with money," Szejna told Radio Zet.
Israel's army acknowledged on Wednesday it committed a "grave mistake" when it killed seven aid workers from the US charity in an airstrike in Gaza.
"This incident was a grave mistake," Israeli Defense Forces Chief of Staff Herzi Halevi said in a video message posted on social media platform X.
He blamed "a misidentification -- at night during a war in very complex conditions".
"It shouldn't have happened," he added.
Seven staff from US-based food aid charity World Central Kitchen (WCK) were killed when a strike hit their convoy in the Gazan town of Deir al-Balah on Monday.
According to the organization, those killed included Australian, British, Palestinian, Polish and US-Canadian staff.
Since the start of the war, the NGO has been involved in humanitarian operations in Gaza, and was one of two groups spearheading efforts to deliver food aid arriving by sea from Cyprus.
The group said it was suspending its operations in the region following the strike.