Three mortar shells have been fired from Gaza into Israel after a humanitarian ceasefire came into effect, according to the Israeli military.
Police had said two rockets fell in open areas in southern Israel, causing no damage or injuries, two hours after the ceasefire began. The army later said in a statement that the attack consisted of three mortar shells.
It was not immediately clear whether the Israeli military would respond.
It came after Israel and Hamas started observing a five-hour humanitarian ceasefire following a request by the United Nations so supplies could be delivered to Gaza.
Fighting continued in the lead-up to the start of the ceasefire. Police in the southern Gaza town of Rafah said tank shells landed on a house, killing at least three civilians.
The Israeli military said 15 rockets were fired into Israel this morning. It also said it prevented an attack by 13 militants who infiltrated into Israel through a tunnel from Gaza.
The cross-border fighting has so far killed more than 220 Palestinians and an Israeli, according to officials.