The Palestine Red Crescent Society has called for an independent international inquiry into the killing of 15 humanitarian personnel last month in an attack by Israeli forces in Gaza.
The paramedics and emergency responders were shot dead on 23 March near the southern Gaza city of Rafah and buried in a shallow grave.
Their bodies were found a week later by officials from the United Nations and the Palestinian Red Crescent and another man is still missing.
Palestine Red Crescent Society President Younis Al-Khatib said the organisation is calling on "the world to form an independent and impartial international commission of inquiry into the circumstances of the deliberate killing of the ambulance crews in the Gaza Strip".
His comments come after the Israeli military changed its initial account about the deaths of the emergency workers, adding investigators are still examining the evidence.
It claimed they killed nine militants from Hamas and Islamic Jihad who were travelling in Palestinian Red Crescent vehicles.
However, video recovered from the mobile phone of one of the dead men and published by the Palestinian Red Crescent showed emergency workers in their uniforms and clearly marked ambulances and fire trucks, with their lights on, being fired on by soldiers.
Watch: Red Crescent video appears to contradict IDF account of medic attack
The only known survivor of the incident, Palestinian Red Crescent paramedic Munther Abed, also said he had seen soldiers opening fire on clearly marked emergency response vehicles.
An Israeli military official said on Saturday investigators were examining the video and conclusions were expected to be presented to army commanders.
He said the initial report received from the field did not describe lights but that investigators were looking at "operational information" and were trying to understand if this was due to an error by the person making the initial report.
Israeli media briefed by the military reported that troops had identified at least six of the 15 dead as members of militant groups.
However, the official declined to provide any evidence or detail of how the identifications were made, saying he did not want to share classified information.
Meanwhile a Palestinian journalist was killed and nine others were wounded, some critically, when an Israeli air strike hit a tent used by local media in southern Gaza, medics and the local journalists' union said.
Footage showed people trying to douse flames from a fire in the tent, inside the compound of the Nasser Hospital in Khan Younis, during the early hours of this morning.
Reuters was able to verify the video from the position, layout and design of nearby buildings and tents.
The date could be verified by media reports and corroborating videos.
Other footage posted on social media but not verified by Reuters appeared to show the tent had been burned to the ground, along with the furniture and equipment inside it.
A second Palestinian was also killed in the attack, medics in Gaza said.
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Following the incident, dozens of journalists and relatives took part in the funeral of the dead journalist, Helmy al-Faqawi.
Colleagues carried his body on a medical stretcher with his blue flak jacket placed on top.
"We will continue to deliver the message and convey the truth to the whole world. This is our humanitarian duty," said fellow journalist Abd Shaath, who added that they were woken by the strike to find the nearby tent of their colleagues on fire.
Mr Faqawi's death raised the number of journalists killed by Israel's campaign in Gaza to more than 210 since October 2023, according to the Palestinian Journalists Syndicate.
In total, local health authorities said Israeli military strikes had killed at least ten Palestinians across Gaza today.
More than 50,000 Palestinians have been killed by the Israeli offensive in Gaza, Palestinian officials say.
Israel began its offensive after thousands of Hamas-led gunmen attacked communities in southern Israel on 7 October 2023, killing 1,200 people and abducting 251 as hostages, according to Israeli tallies
