Updates: At least 32 killed in Israeli attacks on Gaza today

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On Palestinian Prisoner’s Day, you can read more on the plight of those held in Israeli jails and their struggle for freedom against Israel’s continued occupation of their land, here.

Read and watch the report by Al Jazeera’s Investigative Unit, which has compiled evidence of potential Israeli war crimes in Gaza, here.

You can keep up to date with all our latest coverage of Israel’s war on Gaza here.

We will be closing this live page soon. Here is recap of the day’s main events:

• At least 32 people killed in Israeli attacks on Gaza since dawn, medical sources tell Al Jazeera 23 of which being killed in northern Gaza.
• Hamas’s Gaza chief has said the group is ready to negotiate to swap all captives with an agreed number of Palestinian prisoners within a deal that ends the war.
• The humanitarian aid system in Gaza is “facing total collapse” due to Israel’s blockade on aid and supplies, ongoing since March 2, the heads of 12 major aid organisations have warned.
• At least 17 people killed in an attack on the Ras Issa port in Yemen following a US air strike, Houthi-affiliated media outlet Al Masirah TV said.
• Thousands of Israeli settlers have stormed the Al-Aqsa Mosque compound, Islam’s third-holiest site, in occupied East Jerusalem.

Palestinians across the occupied West Bank are commemorating the annual Prisoners’ Day by holding rallies and demonstrations dedicated to the nearly 10,000 detainees held in Israeli prisons.

Many of these Palestinians face years in Israeli detention with no charge, suffering from abuse and torture.

Watch the video below:

National Security Minister Itamar Ben-Gvir has called on Israel to increase pressure on Hamas.

“No deal, no ceasefire, no aid – only continued fighting until the Nazis are defeated in Gaza,” he wrote on X. “Increase the pressure, exert all the power and might – until Hamas begs on its knees. Until complete victory.”

The UN agency for children has expressed shock over the targeting of tents in the Gaza Strip overnight, which killed 15 people.

“Images of children burning while sheltering in makeshift tents should shake us all to our core,” the UNICEF executive director said in post on X.

She said since Israel broke the ceasefire on March 18, nearly 600 Palestinian children have been killed and more than 1,600 wounded.

“All parties to this conflict must respect international humanitarian law. Protect civilians. Facilitate aid. Release hostages. Renew a ceasefire,” she added.

Republicans in the US Congress have announced an investigation into Harvard University, accusing it of flouting civil rights law in an escalation of President Trump’s attacks on elite institutions.

The lawmakers wrote to the world-renowned education and research establishment demanding documents on its hiring practices, diversity programmes and last year’s pro-Palestinian campus protests.

The investigation was announced after Trump on Wednesday called the storied seat of learning a “joke” and that it should lose its government research contracts and tax-exempt status.

The Israeli army has issued a statement saying it killed two Palestinians and injured a third in Osarin, occupied West Bank, “who hurled rocks toward vehicles on the highway and endangered the lives of the passengers”.

Finance Minister Bezalel Smotrich has said Israel would not halt the war before accomplishing a “complete victory” in Gaza, which includes the destruction of Hamas and the return of all captives.

“The time has come to open the gates of hell on Hamas, to deepen the fighting until the complete occupation of the Strip, the elimination of Hamas, and the implementation of President Trump’s plan for the voluntary exit and rehabilitation of Gazans in another country,” he wrote on X. “Mr. Prime Minister, go ahead. Give the order.”

Our colleagues on the ground are reporting that two Palestinians were killed in an Israeli drone strike on a house in Khan Younis.

The International Committee of the Red Cross (ICRC) has said it was “outraged” that its premises in Gaza were damaged by an explosive on Wednesday.

“This is the second such incident in three weeks,” the organisation said on X, adding that a second location was struck by a tank shell on March 24.

ICRC did not disclose where its facilities were located.

“Both incidents occurred despite the buildings being clearly marked and regularly notified to all parties,” it said. “We condemn in the strongest terms any action that inhibits our ability to do our work and risks the lives of humanitarian workers.”

Stephane Dujarric, spokesperson for the UN chief, said “humanitarian supplies are nearing total depletion” after Israel stopped entry of cargo, including humanitarian aid, into Gaza on March 2.

“The lifesaving services are on the brink of a total collapse,” Dujarric said. “For example, in Gaza City, only three ambulances for the Palestinian Red Crescent Society out of 30 are currently operational, and that’s due to the lack of fuel to operate those ambulances.”

He added that ongoing hostilities and dwindling aid supplies have “driven up the stress levels”.

“Especially among children with mental health needs, [needs are] growing by the day,” he said.

Our colleagues on the ground are reporting that Israeli forces blew up residential buildings in Rafah.

At least 32 people have been killed across Gaza since dawn, medical sources have told Al Jazeera.

South Africa has condemned the bombing of civilian targets in Gaza by Israel, following a missile strike last week on al-Ahli Hospital.

“Attacks on health facilities, medical personnel and patients are considered a war crime under the IV Geneva Convention of 1949,” the Foreign Ministry said.

It pointed out that the killing of 15 Palestinian health and civil defence workers in Gaza last month “are prohibited by international law and constitute war crimes”.

“First responders like civilians and other non-combatants are never legitimate targets,” it added.

In January, the US paused its bombing campaign when the Houthi rebels stopped their Red Sea attacks amid a ceasefire in Gaza.

However, US strikes resumed under President Trump in March as the Yemeni group threatened to renew its military operations if Israel did not lift its nearly seven-week blockade of Gaza.

Here is a timeline of recent US attacks across Yemen:

• March 15 – US strikes killed at least 32 people, including five children in Sanaa, as well as areas in Saada and al-Bayda.
• March 24 – Air raids in the Sanaa killed one and injure 13.
• April 1 – Fifteen raids on the northern province of Saada, including the city of Saada and the districts of Majz and Sahar. Areas near Sanaa also targeted.
• April 6 – Four people killed in Sanaa.
• April 13 – Six people killed, a dozen wounded after Sanaa province targeted.
• April 16 – US forces launch 18 strikes killing at least one person.

Israeli media outlet Haaretz is reporting that “hundreds of veterans from the Golani Brigade signed a new petition calling for the return of the captives, even at the cost of halting the war in Gaza”.

Additionally, around 315 graduates of the Israeli army’s infantry and special forces units signed another petition echoing the same demands.

Videos posted by Yemeni activists, and verified by Al Jazeera, show a massive fire at Ras Isa port in Yemen’s Hodeidah province.

The US military’s Central Command, CENTCOM, earlier said it targeted a station supplying fuel to the Houthis.

On April 17 every year, Palestinian Prisoners’ Day is commemorated to highlight the plight of those held in Israeli jails and their struggle for freedom against Israel’s continued occupation of their land.

The day marks the 1974 release of Mahmoud Bakr Hijazi, the first Palestinian freed in a prisoner swap with Israel. It was later designated to honour all Palestinian prisoners and highlight Israel’s ongoing detention of Palestinians and violations of their rights.

There are currently nearly 10,000 Palestinians held in jails in Israel and the occupied territory, according to prisoners’ rights group Addameer. To Palestinians, they are political prisoners who must be freed.

Read everything you need to know on why tens of thousands of Palestinians have been imprisoned by Israeli forces here.

At this moment, the strikes are everywhere, targeting not only homes and apartment buildings but even the tents housing displaced people who have been forcibly uprooted.

We’ve witnessed deliberate attacks on civilian infrastructure and essential facilities. Schools, shelters and distribution points have been hit, as well as the International Committee of the Red Cross (ICRC).

Even more concerning is the targeting of the ICRC facility. This is the second time in just two weeks that the ICRC office in the southern part of Gaza came under direct fire from the Israeli military.

Although these strikes resulted in no casualties, they did cause physical damage.

However, these attacks are not isolated to the ICRC. Similar organisations providing vital aid to displaced populations have also been directly targeted.

Three individuals have been killed and several wounded by an Israeli strike on the al-Najjar family home in Jabalia, according to Gaza Civil Defence.

Earlier, we reported that four people were killed when Israel bombed another house in Jabalia.