Tens of thousands of people in Gaza still live in tents, after nearly three years of Israeli airstrikes destroyed much of the Palestinian territory's standing structures.
An Israeli strike in Gaza killed a senior Palestinian aid official who had helped organize World Cup public screenings, just before the Egypt–Argentina match kicked off.
At least 1,012 Palestinians have been killed in Gaza since the ceasefire took effect on October 10 last year, according to the territory's health ministry.
The bodies of the two sisters, 4-year-old Zina and 14-year-old Lana, were sent to Shifa Hospital's morgue, where they lay shrouded in white hospital bags, surrounded by family members.