Police spokesman Micky Rosenfeld had earlier said two rockets fell in open areas in southern Israel, causing no damage or injuries. He said the rockets landed at 12 p.m. local time, two hours after the cease-fire 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. Israel and Hamas both agreed on a halt in fighting for a five-hour period Thursday to allow Gazans to stock up on supplies.