(JTA) — A dual American-Turkish citizen is reportedly among the activists killed by Israeli soldiers when a Gaza-bound flotilla was intercepted by Israel’s Navy.

Turkish investigators told the state-run Anatolia news agency that Furkan Dogan, 19, who has both Turkish and U.S. passports, took four bullets to the head and one to the chest in Monday’s incident.

A funeral was held for Dogan, as well as seven of the other victims, in the Faith Mosque in Istanbul, the Hurriyet News Agency reported. Hundreds of people attended the funeral, shouting anti-Israel slogans, according to the news agency.