Nadav Popplewell, 51 years old, was captured from Kibbutz Nirim during the events on October 7. Photo courtesy Hamas media office
Nadav Popplewell, who also holds British citizenship, is seen speaking in the 11-second clip, which is superimposed with text in Arabic and Hebrew that reads: "Time is running out. Your government is lying".
The 51-year-old was captured from Kibbutz Nirim by Hamas fighters during the events on 7 October, according to Israeli media reports.
The video posted on the group's Telegram channel, showing Popplewell speaking under duress, was the third time footage was released in less than a month of captives held in Gaza.
On 27 April, the group released a video showing two captives alive -- Keith Siegel and Omri Miran.
Three days before that it broadcast another video showing captive Hersh Goldberg-Polin alive.
Some 250 people were captured from southern Israel and taken to the Gaza Strip on 7 October.
Israeli officials say 128 of them are still held captive in the Palestinian territory, including 36 who are dead.
Israel's seven-month war at least 34,971 people have been killed so far, most of them women and children, according to the Gaza health ministry.
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