Two worshipers, Aviel Hadad, a 30-year-old dual citizen of Tunisia and Israel, and his 42-year-old cousin, French-Jewish businessman Benjamin Haddad, were killed when a Tunisian naval officer opened fire at a synagogue on the island of Djerba Tuesday night as hundreds of Jews held an annual pilgrimage there.

A guard was also killed in the attack on the El Ghriba synagogue, and nine others, including four civilians, were injured, according to the Tunisian Interior Ministry.