Israeli authorities have reopened the two crossings with the Gaza Strip after days of hostilities in a sign that cease-fire talks may be advancing.

Israeli and Hamas officials confirmed Sunday that the Erez and Kerem Shalom crossings were opened for the first time since Monday. The officials spoke on condition of anonymity.

Sunday's reopening comes hours after Palestinian militants launched rockets into Israel overnight and the military responded with tank fire.

Four Palestinians, including three teens, died a day earlier from Israeli fire as tens of thousands took part in mass protests along the Israel-Gaza perimeter fence.

Egyptian mediators have tried to reach a cease-fire agreement to end six days of hostilities, which began when a rocket fired by Palestinian militants struck a home near Tel Aviv Monday.