An American-Israeli citizen believed to have been held hostage in Gaza was killed on October 7 during the Hamas attack on Israel, the country’s military has said.

Israeli hostage Omer Neutra is confirmed dead in Gaza, the Israel Defense Forces announced on Monday.The IDF says the 21-year-old from Long Island was killed fighting Hamas militants during the Oct. 7 massacre.

Neutra, 21, a New York native, was believed to have been captured alive when Hamas attacked southern Israel on Oct. 7, 2023.