In a dramatic escalation of the conflict, Palestinian militants fired more than 130 rockets at Israeli civilians in Tel Aviv, but Israel intercepted a rocket fired, killing militants who stormed into the Israeli territory.
According to reports, Palestinians reported 23 people in Gaza were killed in Israeli airstrikes targeting militants.
Israel said it targeted about 150 "terror sites" in Gaza.
The warning sirens that blared in Tel Aviv, one of Israel's most populated areas, showed a threat Israel had warned of. The country said militants' rockets from Gaza are powerful enough to reach 3.5 million Israeli citizens. "Hamas will pay a heavy price for its vicious attacks on millions of Israeli civilians," the Israel Defense Forces said on Twitter.
"No nation would accept constant rocket fire. Neither will we," the IDF said, using the hashtag #ItMustStop. Islamic Jihad, another Palestinian militant group, took responsibility for the rocket fired at Tel Aviv. In a statement, the group called it a "response to the ongoing Zionist aggression." Hamas controls Gaza. Israel has said it holds Hamas responsible for the actions of militant groups inside the territory. Hamas, on Twitter, used the hashtag #Gazaunderattack and warned, "Retaliations are coming, it is a matter of time."
Hamas later claimed responsibility for firing rockets on Jerusalem and Haifa