The initial attacks hit three different areas: Khan Younis in the south of the strip, Shujaiya in the north, and a residential building in central Gaza.
The army said it was targeting the Islamic Jihad in the operation dubbed “Breaking Dawn”.
Islamic Jihad leader assassinated in the attack, which also killed a five-year-old girl and wounded more than 55 civilians
Hamas, the de facto ruler in Gaza, and the Islamic Jihad, the second biggest armed group in the Strip, have promised a heavy response to the Israeli aggression.
Ziad al-Nakhalah, head of the Islamic Jihad, said there are no limits to this round of fighting
“There are no red lines in this battle and Tel Aviv will fall under the rockets of resistance, as well as all Israeli cities,” he said.
Fawzi Barhoum, the spokesperson for Hamas, said the resistance factions in Gaza are united and ready to respond with “full force”.