Omer Neutra, who had Israeli and U.S. dual citizenship, was doing military service in Israel when Hamas invaded. His parents have been high-profile campaigners for the hostages.

Omer Neutra, a U.S.-Israeli citizen believed held hostage by Hamas, was killed on Oct. 7, 2023, the Israeli military said Monday.

The Israeli military said Monday that Omer Maxim Neutra, an American-Israeli citizen who was previously believed to be alive and held hostage in Gaza, was killed during the Hamas-led attack on October 7,

President-elect Donald J. Trump said in a social media post on Monday that the hostages must be released before his inauguration in January.

During their deadly 2023 attack on Israel, Hamas-led militants captured more than 250 people, according to Israeli tallies, including dual Israeli-American nationals. Around half of the 101 foreign and Israeli hostages still held incommunicado in Gaza are believed to be alive.