Moment of strike captured on graphic live streampublished at 14:08 British Summer Time

14:08 BST

Image source, Alghad TV

By Shayan Sardarizadeh and Benedict Garman

We have verified several graphic videos showing two Israeli strikes on Nasser Hospital in Gaza, killing a number of journalists.

One video, captured on a livestream by Alghad TV, shows several emergency workers responding to the first strike near the top floor of Nasser Hospital, as a number of journalists in the background capture the scene.

A staircase, where journalists often gather to film views across Khan Younis, is visible in the footage. A strike then directly hits the emergency workers and reporters, sending smoke and rubble in the air. At least one body is visible in the aftermath.

Image source, Alghad TV

A separate video, filmed from the same staircase, shows the aftermath of the strike. Several bodies can be seen on the staircase, as medics respond to the attack.

Another clip, filmed in front of the main entrance of Nasser hospital, shows a medical worker holding up bloodied clothes to the camera, before an explosion sends people running for cover.

A video filmed outside the hospital, shows smoke billowing from the top floor, with the journalists filming declaring that Nasser hospital has been targeted "once again".

We are examining more images and videos to confirm the identities of the journalists reportedly killed.

Image source, AP

• Hussam al-Masri worked as a cameraman Reuters. The news agency reported he was killed in a first strike on the hospital
• Mariam Dagga, 33, was a freelance journalist working with the Associated Press (AP)
• Mohammed Salama worked for Al Jazeera and Middle East Eye
• Ahmad Abu Aziz worked for Middle East Eye, according to its own reporting. The outlet says he worked on a freelance basis and was based in Khan Younis
• We don't yet have confirmation of the outlet Moas Abu Taha was working with - US TV network NBC said Taha did not work with it as had initially been reported

Image source, EPA

Today's attack comes two weeks after six journalists, including four from Al Jazeera, were killed in an Israeli targeted attack near al-Shifa Hospital in Gaza City.

The UN's human rights office condemned the attack, calling it a grave breach of international law.

Of that attack, the Israel Defense Forces (IDF) said it had targeted Anas al-Sharif, a prominent Al Jazeera reporter, alleging he had "served as the head of a terrorist cell in Hamas", but it was widely perceived as not having published any conclusive evidence to support the claim.

Yolande Knell
Middle East correspondent, in Jerusalem

Image source, Getty Images

At least 20 people, including five journalists working for the international media, are said to have been killed in Israeli military strikes on Nasser Hospital in southern Gaza.

The Israeli military has confirmed it carried out an attack nearby, but not why the building was hit. It says it’s ordered an initial inquiry.

Footage shows smoke rising up after the main hospital in southern Gaza was hit. In one video, as a doctor holds up bloodied clothes to show journalists, there’s another strike. Reuters confirmed that its cameraman Hussam al-Masri was killed.

He’d been operating a live TV feed on the roof and it shut down at the instant of the initial strike.

Witnesses said the second strike took place after rescue workers and journalists rushed to the site of the first attack.

Associated Press said its freelancer, Mariam Abu Dagga was also killed. So was Al Jazeera cameraman Mohammad Salama and two more journalists, Moaz Abu Taha and Ahmad Abu Aziz.

The Committee to Protect Journalists says more than 190 journalists have been killed in 22-months of war.

In a statement, the Israeli military says it “regrets any harm to uninvolved individuals and does not target journalists as such".

We have just had confirmation, from officials in Gaza, that a fifth journalist has died as a result of the Israeli strike on Nasser Hospital.

Ahmad Abu Aziz reportedly died from his injuries in the strike, bringing the total number of journalists killed in Monday's attack to five.

We can now bring you an image that's just come through on the wires, which shows a man holding up the equipment that had been used by Reuters contractor Hussam al-Masri at the site in Khan Younis where he was killed.

The below image was also provided by Reuters.

Image source, Reuters

According to the caption provided by the news agency, the photo was taken from a video that was shot by another contractor - Hatem Khlaed - who was himself injured by a second strike while filming.

Reuters news agency has said its cameraman, Hussam al-Masri, was among those killed.

It adds that one of their contractors was also injured in the strikes.

Al-Masri was killed in the first strike, Reuters reports citing officials, and photographer Hatem Khaled was wounded in a second strike.

"We are devastated to learn of the death of Reuters contractor Hussam al-Masri and injuries to another of our contractors, Hatem Khaled, in Israeli strikes on the Nasser hospital in Gaza today," a Reuters spokesperson said in a statement.

The Associated Press (AP) says Mariam Dagga, a freelance journalist working for it, was also killed. AP said it was "shocked and saddened" by the 33-year-old's death.

The others are said to have been Mohammed Salama, working for Al Jazeera, and photographer Moaz Abu Taha.

US TV network NBC said Taha did not work for it, as had been initially reported.

Image source, Getty Images

Several people were killed in an initial strike, and others in a second which happened as rescuers attended the scene, the Hamas-run Civil Defence says.

As we've been reporting, the Israeli military says it carried out an attack in the area of the hospital and an investigation has been ordered. It adds that it "does not target journalists as such".

In video from the scene, a doctor standing at an entrance to what is the main hospital in southern Gaza holds up bloodied clothes to show journalists following the first strike.

Suddenly there is a blast, sending people running for cover as glass shatters. A man injured by the blast is seen trying to drag himself to safety.

We can now bring you a statement from the Israel Defense Forces (IDF), which confirms that it carried out a strike in the area of Nasser Hospital in southern Gaza.

"The Chief of the General Staff instructed to conduct an initial inquiry as soon as possible," the statement says, adding that the IDF "regrets any harm to uninvolved individuals and does not target journalists as such".

"The IDF acts to mitigate harm to uninvolved individuals as much as possible while maintaining the safety of IDF troops."

The Hamas-run health ministry in Gaza has this morning reported at least 20 deaths following an Israeli strike on the Nasser hospital in Khan Younis.

The ministry says that medics, patients and journalists are among those who have died, and says that treatment of patients in the hospital has been impacted.

Al Jazeera says on its Instagram account that one of their journalists was killed in the attack - the outlet adds that at least three other journalists were also killed.

Separately, Associated Press has reported that a visual journalist who freelanced for the agency, among other outlets, has died.

The IDF has said there will be an "initial inquiry" following the strike and adds that it "does not target journalists as such".

We'll have more with you as we get it - stay with us.