Turkey is working to ensure the safe passage of some 200 civilians trapped in tunnels in Gaza, after having facilitated the return of a deceased Israeli soldier killed there more than a decade ago, a senior Turkish official said late on Sunday.
Hamas earlier said that fighters holed up in the Israeli-held Rafah area will not surrender to Israel and it urged mediators to find a solution to a crisis that threatens the month-old ceasefire.
Separately on Sunday, Israel said it received the remains of Hadar Goldin, a military officer killed in an ambush in Gaza during the 2014 Israel-Hamas war, after a handover by the Red Cross.
Turkey, the senior official said, "successfully facilitated the return of Hadar Goldin's remains to Israel after 11 years" after "intensive efforts (reflecting) Hamas' clear commitment to the ceasefire."
"At the same time, we are working to ensure the safe passage of some 200 Gazan civilians currently trapped in the tunnels," the official told Reuters.
Turkey was a signatory to last month's Israel-Hamas ceasefire deal, backed by US President Donald Trump. It has close ties with the Palestinian group and has fiercely criticised Israel's military campaign in Gaza.
The US and Iran failed to reach an agreement to end their war despite marathon talks that concluded on Sunday in the Pakistani capital Islamabad, jeopardising a fragile ceasefire.
Russia and Ukraine accused each other on Sunday of breaching the 32-hour ceasefire in their four-year war, reporting more than a thousand drone and shelling attacks just hours after the truce began on Saturday to mark Orthodox Easter.
At least 30 people were killed on Saturday in a stampede at the Laferriere Citadel in the northern countryside of Haiti, authorities said, warning that the death toll could rise.
A cyclone battered New Zealand's North Island on Sunday, cutting power to thousands of residents and forcing hundreds to evacuate, as officials warned conditions would worsen through the day.
Negotiations between the United States and Iran appeared to have concluded for now, Iran's government has announced early on Sunday, after a series of talks in Pakistan to end the six-week war between Washington and Tehran.