The Al-Qassam Brigades, the military wing of Hamas, confirmed the killing of Izz al-Din Abdul Aziz al-Beik, “Abu Hamza,” a member of the General Military Council and commander of the Northern Gaza Brigade, in an Israeli strike at dawn on Tuesday, September 29, 2026.

Israel had earlier claimed responsibility for the operation, saying that both the Israeli military and the Shin Bet security service participated in carrying it out.

How was he assassinated?

An Israeli airstrike targeted a residential apartment in the Al-Nasr neighborhood west of Gaza City around dawn.

Reuters confirmed that al-Beik was killed in an airstrike on the building, while Palestinian sources and eyewitnesses said the apartment was struck by several missiles. Asharq Al-Awsat reported, citing its sources, that the attack took place at approximately 3:30 a.m. and involved three missiles.

This was not the first attempt to kill him. In May, Israel announced that it had targeted al-Beik in another strike in Gaza City, but he survived that attack.

Who was Izz al-Din al-Beik?

Al-Beik was not merely a local field commander.

According to a statement by the Al-Qassam Brigades, he began by commanding the first special unit within the Northern Brigade before assuming command of the Imad Aqel Battalion in 2009. In 2015, he moved on to head the brigade’s military intelligence.

Following the killing of Ahmed al-Ghandour in November 2023, al-Beik assumed command of the Northern Gaza Brigade.

Al-Qassam also said that he was one of the commanders involved in the operations room that directed the October 7, 2023 attack.

This, in particular, helps explain his importance as a target for Israel.

Netanyahu and Israeli Defense Minister Israel Katz said al-Beik remained involved in planning attacks against Israeli forces and recruiting new fighters.

The Israeli military also said that he had been working to rebuild the capabilities of the Northern Gaza Brigade following the losses it sustained during the war.

This is Israel’s stated justification for targeting him.

But what does his assassination actually mean?

Organizationally, the strike is significant.

Israel targeted a commander who combined intelligence experience with operational field command and who was responsible for an area considered among the most difficult in Gaza for the Israeli military — stretching from Beit Hanoun and Beit Lahia to Jabalia.

His killing also follows a series of assassinations targeting Al-Qassam brigade commanders, indicating that Israel continues to target the layer of military leadership Hamas has attempted to rebuild during the war.

However, assassinating a brigade commander does not necessarily mean the collapse of the brigade itself.

Armed organizations typically appoint replacements and redistribute responsibilities. The more important question now is how effectively Al-Qassam can maintain command and control and rebuild its units in northern Gaza after losing a figure at this level.

At the same time, the continuation of assassinations inside Gaza despite the existence of a ceasefire agreement places additional pressure on that agreement and increases the risk of a return to a broader cycle of escalation.

Reuters reported that the strike occurred amid continuing Israeli attacks despite the ceasefire that came into effect last year.

The Israeli message appears clear:

Even after the end of large-scale ground operations, Israel does not consider the issue of Hamas’s military leadership closed.

It continues to pursue commanders linked to the October 7 attack or to efforts to rebuild the movement’s military capabilities.

For Al-Qassam, meanwhile, the loss of al-Beik represents another test of its ability to replace senior commanders and preserve its military structure in northern Gaza after years of war and assassinations.

The battle is therefore no longer only about control of the ground…

It is also about which side can rebuild its leadership and capabilities faster than the other.