There was no claim of responsibility for the early morning attack. The military said Hamas fired the rocket from about 120 km (75 miles) away, making it the longest-range attack from Gaza causing casualties since a 2014 war.
The Palestinians are seeking to press war crimes charges against Israel at the International Criminal Court in The Hague. The court’s prosecutor has opened a preliminary investigation, but not made a decision on whether to move ahead with a case.
Home to 2 million Palestinians, more than half of them war refugees and their descendents, Gaza has suffered deep poverty and infrastructure collapses under a 12-year blockade by Israel and Egypt, which say they aim to curb Hamas threats.