Israel opened crossing points into Gaza Strip on Thursday, after closing them for two days because of rocket attacks from the salient.
The decision to reopen the crossings was made after Defence Minister Ehud Barak met with military chiefs, Israel Radio said.
No Palestinian group claimed responsibility for the rocket attack Monday afternoon, which violated an Egyptian-brokered ceasefire between Israel and Gaza militias.
Under the ceasefire, Israel has been gradually easing its closure of the Strip, allowing more trucks with bearing goods into the salient. But Israeli officials have said the pace of the flow of goods into the Strip is dependent on the truce being adhered to.

The German car market is facing its worse downturn, the nation's auto industry association warned Wednesday as the deepening sense of economic gloom in the country leads to a shakeout in the industry and the prospects of big job cuts.
A comedy starring Vince Vaughn and Reese Witherspoon as a couple trying to avoid their families at Christmas debuted in first place over the weekend at North American box offices, according to preliminary studio estimates issued Sunday.