The Gaza hostage deal was back on track after a temporary delay over a dispute about aid supplies to the north of the besieged enclave.
TV images showed Red Cross vehicles at Rafah crossing between Gaza and Egypt.
A Palestinian official familiar with the diplomacy said Hamas would continue with the four-day truce agreed with Israel, the first break in fighting in seven weeks of war.
The armed wing of Hamas had earlier said it was delaying Saturday's scheduled second round of hostage releases until Israel met all truce conditions, including committing to let aid trucks into northern Gaza.
Hamas spokesperson Osama Hamdan said only 65 of 340 aid trucks that had entered Gaza since Friday had reached northern Gaza, which was "less than half of what Israel agreed on.".
Israel has said 50 trucks with food, water, shelter equipment and medical supplies had deployed to northern Gaza under UN supervision, the first significant aid delivery there since the start of the war.
The brief dispute over the truce raised concerns over the smooth implementation of the hostage deal after 13 Israeli women and children were freed by Hamas on Friday. »