British-Israeli Nadav Popplewell was captured at Nirim Kibbutz by the Palestinian group Hamas on October 7.
Hamas's armed wing, the Qassam Brigades, has said that British-Israeli captive Nadav Popplewell died from wounds sustained in an Israeli airstrike a month ago.
The group's announcement Saturday came just hours after the Palestinian group released an 11-second video showing Popplewell with a bruised eye.
In the video republished on social media and cited by Israeli media, a man is seen wearing a white T-shirt and introduces himself as Nadav Popplewell, 51, from Kibbutz Nirim in southern Israel.
Overlaid text in Arabic and Hebrew reads: “Time is running out. “His government lies.”
Popplewell was taken captive in Nirim during the Hamas-led attack on October 7, according to the Israeli news site Ynet. His mother was also taken captive, but later freed during the captive and prisoner exchange between Hamas and Israel last year. Popplewell's brother was killed in the attack, Ynet reported.
The video posted Saturday on the Telegram channel of Hamas's armed wing is the third time in less than a month that the group has published images of captives held in Gaza.
On April 27, Hamas released a video showing two live captives: Keith Siegel and Omri Miran. Three days earlier he also released another video showing the captive Hersh Goldberg-Polin alive.
The videos come amid growing internal pressure on the Israeli government to secure the release of the remaining captives.
Al Jazeera's Stefanie Dekker reported from Amman that this tactic of releasing videos of captives on a Saturday, when protests are taking place in Tel Aviv, is a way to put pressure on the Israeli government.
“This is what has been a trickle, so to speak, from Hamas. Where, by publishing videos, which sometimes show dead hostages, they are trying to put pressure on the Israeli government,” he said.
“But this hasn't really changed the policies of [the Israeli] government.”
On Saturday, the Israel Hostage and Missing Families Forum issued a statement calling on the Israeli government to reach an agreement with Hamas to secure the release of the captives.
“Every sign of life received from the hostages held by Hamas is another cry of anguish for the Israeli government and its leaders,” the family group said in its statement.
“We don't have a moment to waste! “They must strive to implement an agreement that will bring them all back today.”
Relatives of the captives also accused Prime Minister Benjamin Netanyahu of not caring about those detained in Gaza and called on Netanyahu to resign.
“If we continue down this path, we will lose not only the hostages but the country itself,” Naama Weinberg, a cousin of one of the captives, said at a news conference in Tel Aviv on Saturday afternoon.
“There is no victory and there can be no victory without the return of the hostages.”
Despite immense pressure, Netanyahu and his government have so far failed to reach an agreement with Hamas.
Some 1,139 people were killed on October 7 when Hamas and allied fighters attacked southern Israel, and 250 captives were also taken to the Gaza Strip. Israeli officials say 128 of them remain detained in Palestinian territory, including 36 who are dead.
Israel's seven-month military campaign in Gaza has so far killed at least 34,971 people and injured another 78,641.
