Islamic Jihad’s armed wing announced the killing of Bahaa Abu al-Atta in a statement on Tuesday after Israel confirmed it had targeted the 42-year-old commander.
Separately, the Palestinian group said that Israel also attacked the home of one of its political leaders in the Syrian capital, Damascus.
Gaza air raid
Islamic Jihad said al-Atta’s wife was also killed in the blast that ripped through the building in Gaza City’s Shejaiya district before dawn. At least two others were wounded, according to medics.
The group said al-Atta was killed during “a heroic action”, without elaborating, and promised to take revenge.
“Our inevitable retaliation will rock the Zionist entity,” it said, referring to Israel.
Hamas, the Palestinian group that administers the Gaza Strip, said Israel “bears full responsibility for all consequences of this escalation” and promised that al-Atta’s death “will not go unpunished”.
The Israeli military said Prime Minister Benjamin Netanyahu had authorised the operation against al-Atta, blaming him for recent rocket, drone and sniper attacks against Israel, and attempted infiltrations into the country.
“Abu al-Atta was responsible for most of the Palestinian Islamic Jihad’s activity in the Gaza Strip and was a ticking bomb,” it said, accusing al-Atta of planning “imminent terror attacks through various means”.
Gaza has been under a joint Israeli-Egyptian blockade for more than a decade, where freedom of movement for the population of two million has been severely curtailed.
Al Jazeera’s Harry Fawcett, reporting from West Jerusalem, said the killing of al-Atta marked “an extremely dangerous escalation”.
“Israel has not targeted leaders in this way for some time, so this strike is seen here as one which brings significant risks,” he said.
Shortly after the attack, dozens of rockets were launched towards Israel as air raid sirens sounded across southern and central parts of the country, including the commercial capital, Tel Aviv, the Israeli military said.
There were no immediate reports of casualties or damage. Israeli police said they closed some roads on the edge of Gaza as a precaution, while crossing points between Israel and Gaza were also closed. Schools and some ministries in Gaza were also shuttered, Fawcett said.
“The Israeli responses to the rocket fire so far have largely targeted empty areas, evacuated areas, so there is a suggestion that Israel is trying to draw back to some extent. But the Israeli military is also saying that it is prepared for several days of fighting,” he added.
Mulhaimar Abu Sadaa, a political science professor at Al Azhar University, told Al Jazeera there was likely to be an escalation between Israel and armed groups in Gaza, depending on the behaviour of Hamas.
“If Hamas is going to join the Islamic Jihad we are going to approach further escalation with Israel, but if Hamas is able to contain the Islamic Jihad, with the help of the Egyptians, the situation might be contained or brought under control within two to three days,” he said.
“The Islamic Jihad is the second strongest military organisation in Gaza, after Hamas, and there is a lot of competition between the two groups. It is not easy to say that Hamas will be able to contain the Islamic Jihad. I think the Egyptians and other international mediators like the UN will probably have to be brought in to contain this cycle of violence.”
“Generally speaking, Islamic Jihad is funded and supported militarily and politically by Iran, so maybe Iran will play a role whether this cycle of violence will be extended or brought to an end soon.”
Separately on Tuesday, Syrian state media said that Israel launched a missile attack targeting the home of an Islamic Jihad official in the Syrian capital, killing his son and granddaughter.
A Syrian official said Israeli fighter jets fired three missiles towards Damascus one of which was intercepted, while the other two struck the home of Islamic Jihad political leader Akram al-Ajouri in Mezzah, a western district of the city, according to state news agency SANA.
Al-Ajouri’s son Muath and granddaughter Batoul were killed, the official was cited as saying, while nine others were wounded.
Islamic Jihad said Akram al-Ajouri survived the attack on his home and blamed the “Zionist criminal enemy”.
There was no immediate comment from Israel.
The attack comes at a sensitive time in Israeli domestic politics, as Prime Minister Benjamin Netanyahu heads a caretaker government following two inconclusive elections. His main political rival Benny Gantz, a former chief of the Israeli military, is currently trying to form a coalition government.
“There has been some criticism in Israeli politics, notably from the Palestinian-Israeli Joint List members, accusing Netanyahu of engaging in this as a desperate last attempt to hold on to power,” Fawcett said.
“Gantz … says that this was the right decision. He has been recommending a tougher response on Gaza for many months”.
Earlier this week, Netanyahu appointed the far-right politician Naftali Bennett as defence minister. Bennett has long advocated stronger action against Palestinian armed groups in Gaza.