What we know The U.N. agency responsible for administering aid to Gaza said that the first full day of the ceasefire agreement between Israel and Hamas was running smoothly, with hostages and prisoners returning home, and aid trucks entering the Gaza Strip. Israel released 90 Palestinian prisoners, all women and children, early Monday local time as part of the first phase of the ceasefire. That came after Hamas released three Israeli women, including a dual British national, who it had been holding hostage in Gaza. Four additional hostages are expected to be released Saturday as part of the 42-day first phase, with a total of 33 hostages and almost 2,000 Palestinian prisoners and detainees set to be freed. Hundreds of aid trucks have begun entering Gaza, where a shortage of food, medicine and fuel has created a spiraling humanitarian crisis. Displaced Palestinians in Gaza began returning to their homes, mostly on foot, only to find much of the enclave has been reduced to rubble. The United Nations said 92% of all housing units have been destroyed.