A U.S.-Israeli citizen who was kidnapped on Oct. 7 while Hamas terrorists invaded southern Israel and massacred hundreds has been confirmed dead, the Israel Defense Forces announced.The Hostages and Missing Persons Families Forum headquarters said it was mourning the slaying of Sergeant Itay Chen, who served on the Gaza border and was taken hostage on what is considered in Israel as “Black Saturday.” Itay’s body “is still being held captive by Hamas,” according to Israeli officials. “We share in the profound grief of the Chen family. Itay Chen (19) was always surrounded by friends. A beloved individual who drew others to him with his warm presence. Itay loved the land, going on hikes, and was a senior instructor in youth movements – a salt of the earth person,” a statement in his memory read. Sergeant Itay Chen has been confirmed dead, the IDF announced Monday. (Fox News/ IDF)”Itay was very attached to Gucci, the family’s pet dog,” the statement continued. “He played basketball greatly enjoyed sports, good food, and listening to music. Itay was the middle child of three siblings. He had been in a relationship for over a year with Neta, whom he called the love of his life.” Dozens of people walked through Central Park in New York City on March 10, 2024, demanding that the 134 people still being held hostage in Gaza be freed. (Spencer Platt/Getty Images)As of Monday, there are 134 hostages who remain held in Gaza, and 34 of them are considered dead.This is a developing story. Check back here for updates. Yonat Friling is a senior field producer for Fox News Media based in the Jerusalem Bureau.Â