Hamas has handed over the remains of another dead captive to Israel, hours after an Israeli drone attack in southern Gaza killed two Palestinians amid a fragile ceasefire.

The Israeli military said on Monday that the Red Cross had taken custody of the coffin and was in the process of transporting it to the army’s troops in Gaza.

Under the terms of a United States-brokered ceasefire that took effect on October 10, Hamas has undertaken to return the bodies of all the 28 deceased captives. The remains of 16 had been handed over as of Monday.

The 20 surviving captives were freed on October 13 as part of the truce.

The release of the latest body comes as the families of some of the captives called on the Israeli government to pause the ceasefire if Hamas fails to locate and hand over the bodies.

“Hamas knows exactly where every one of the deceased hostages is held,” the Hostages and Missing Families Forum said.

“The families urge the government of Israel, the United States administration and the mediators not to advance to the next phase of the agreement until Hamas fulfils all of its obligations and returns every hostage to Israel,” the association added.

The statement echoed the Israeli government’s claim that Hamas knows where the remains are.

On Saturday, Hamas negotiator Khalil al-Hayya said there were “challenges” in locating the captives’ bodies because “the occupation has altered the terrain of Gaza”.

He suggested that some of those who had buried the bodies had been killed during the war, while others had forgotten the burial locations.

The day after al-Hayya’s comments, Israel permitted an Egyptian technical team to enter Gaza to help with the task of finding the bodies. The search involves the use of excavator machines and trucks.

Despite the ceasefire, an Israeli drone attack close to the southern Gaza city of Khan Younis killed at least two people on Monday, according to Nasser Hospital.

In total, eight Palestinians have been killed and another 13 injured in Israeli attacks across the enclave over the last 48 hours, Gaza’s Ministry of Health said on Monday. At least 68,527 people have died and 170,395 have been injured since Israel’s war on Gaza began in October 2023, it added.

Speaking on board Air Force One on Monday, US Secretary of State Marco Rubio suggested that Israel had not violated the truce through its strike against a member of the Palestinian Islamic Jihad group on Saturday.

“We don’t view that as a violation of the ceasefire,” he said, accusing the target of planning an attack on Israeli troops.”They have the right if there’s an imminent threat to Israel, and all the mediators agree with that.”

In the more than two weeks since the truce began, about 473,000 people have returned to northern Gaza, where they face widespread destruction of property and critical shortages of basic necessities like food and water, according to the United Nations.

Younis al-Khatib, the head of the Palestine Red Crescent Society, has warned that Gaza’s population still faces the same desperate humanitarian emergency as it did before the truce.

“Rebuilding human beings is more difficult than rebuilding destroyed homes,” he said during meetings with Norway’s prime minister and foreign minister in Oslo, noting that residents would need mental health care for years to come.

The World Health Organization also warned that the number of Palestinians in Gaza who need mental health support had risen from about 485,000 to more than one million after two years of Israel’s war.

Almost all the children in the enclave need such help, according to the UN children’s agency, UNICEF, which has said that Gaza has been “the most dangerous place in the world to be a child” over the last two years.

Tess Ingram, the group’s spokesperson in Gaza, explained that this is because of the “sheer number of children who’ve been killed and injured, displaced, separated from their families [or] who have lost a loved one”.

“A classroom of children was killed every single day for two years in this conflict, and the scars of what the children have endured will last for many, many years to come,” Ingram told Al Jazeera, speaking from the al-Mawasi area in the south.