TEL AVIV, Israel — Israeli Prime Minister Benjamin Netanyahu said he has ordered the army to immediately carry out “powerful strikes” in Gaza, in a new test for a U.S.-brokered ceasefire.

Netanyahu made the announcement shortly after Israel said that Hamas had opened fire at Israeli forces in southern Gaza.

Tensions were already high after Hamas returned a set of remains that Israel said belonged to a body of an Israeli hostage recovered earlier in the war.

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