A journalist for Al Jazeera was shot and killed while covering an Israeli raid in the occupied West Bank town of Jenin early on Wednesday.
The Palestinian health ministry said Shireen Abu Akleh, a well-known Palestinian reporter for the broadcaster's Arabic language channel, was shot and died soon afterwards.
Another Palestinian journalist working for the Jerusalem-based Al-Quds newspaper was wounded but in stable condition.
The Qatar-based network interrupted its broadcast to announce her death.
In a statement flashed on its channel, it called on the international community to "condemn and hold the Israeli occupation forces accountable for deliberately targeting and killing our colleague".
"We pledge to prosecute the perpetrators legally, no matter how hard they try to cover up their crime, and bring them to justice," Al Jazeera said in a statement.
The Israeli military said its forces came under attack with heavy gunfire and explosives while operating in Jenin, and that they fired back.
The military said it is "investigating the event and looking into the possibility that the journalists were hit by the Palestinian gunmen".
Israeli Prime Minister Naftali Bennett said that based on the information they had already gathered, "there is a considerable chance that armed Palestinians, who fired wildly, were the ones who brought about the journalist's unfortunate death".
Israeli officials said there was video footage of Palestinian gunmen boasting that they had killed a soldier, but that no Israelis were wounded in the incident, indicating they shot a journalist.
Israel said it had proposed a joint investigation and autopsy with the Palestinian Authority, which refused the offer.
The Palestinian Authority, which administers parts of the occupied West Bank and cooperates with Israel on security matters, condemned what it said was a "shocking crime" committed by Israeli forces.
Abu Akleh, 51, was born in Jerusalem. She began working for Al Jazeera in 1997 and regularly reported on-camera from across the Palestinian territories.
In video footage of the incident, Abu Akleh can be seen wearing a blue flak jacket clearly marked with the word "PRESS".
Journalists say there were no militants in the area
Samoudi, who was working as her producer, said they were among a group of seven reporters who went to cover the raid early on Wednesday.
He said they were all wearing protective gear that clearly marked them as reporters, and they passed by Israeli troops so the soldiers would see them and know that they were there.
He said the first shot missed them, then a second struck him, and a third killed Abu Akleh.
He said there were no militants or other civilians in the area — only the reporters and the army.
He said the military's suggestion that they were shot by militants was a "complete lie".
Shaza Hanaysheh, a reporter with a Palestinian news website who was also among the reporters, gave a similar account in an interview with Al Jazeera's Arabic channel, saying there were no clashes or shooting in the immediate area.
She said that when the shots rang out she and Abu Akleh ran toward a tree to take shelter.
"I reached the tree before Shireen. She fell on the ground," Ms Hanaysheh said.
Brigadier General Ran Kochav, an Israeli commander, told army radio that the two journalists were standing alongside armed Palestinians.
He said the gunmen were "unprofessional people, terrorists, who were shooting at our troops".
Israel has carried out near-daily raids in the occupied West Bank in recent weeks amid a series of deadly attacks inside Israel, many of them carried out by Palestinians from in and around Jenin.
The town, and particularly its refugee camp, has long been known as a militant bastion.
Israel captured the West Bank in the 1967 Mideast war, and the Palestinians want the territory to form the main part of their future state.
Strained relations between Israeli forces and media
Nearly 3 million Palestinians live in the territory under Israeli military rule. Israel has built more than 130 settlements across the West Bank that are home to nearly 500,000 Jewish settlers, who have full Israeli citizenship.
Israelis have long been critical of Al Jazeera's coverage, but authorities generally allow its journalists to operate freely.
Another Al Jazeera reporter, Givara Budeiri, was briefly detained last year during a protest in Jerusalem and treated for a broken hand, which her employer blamed on rough treatment by police.
Relations between Israeli forces and the media, especially Palestinian journalists, is strained.
A number of Palestinian reporters have been wounded by rubber-coated bullets or tear gas while covering demonstrations in the West Bank.
A Palestinian journalist in Gaza was shot and killed by Israeli forces while filming violent protests along the Gaza frontier in 2018.
In November of that year, Associated Press reporter Rashed Rashid was covering a protest near the Gaza frontier when he was shot in the left ankle, apparently by Israeli fire.
Mr Rashid was wearing protective gear that clearly identified him as a journalist, and was standing with a crowd of other journalists some 600 meters (660 yards) away from the Israeli border when he was hit.
The military has never acknowledged the shooting.
During last year's war between Israel and Gaza's militant Hamas rulers, an Israeli air strike destroyed the building in Gaza City housing the offices of The Associated Press and Al Jazeera.
Residents were warned to evacuate and no one was hurt in the strike.
Israel said Hamas was using the building as a command centre but has provided no evidence.