THE VICTIMS: 3 Americans killed in Jerusalem attack

NEW YORK (WABC) -- The victims of Tuesday's attack during morning prayers at a Jerusalem synagogue were three Americans and a Briton, all of whom had relocated from the U.S. and held Israeli citizenship.

The Americans have been identified as 49-year old Arieh Kupinsky, 55-year old Kaliman Levine, and 59-year old Moshe Twersky.

Twersky, the grandson of a renowned rabbi from Boston, Joseph Soloveichik, was the head of Yeshivas Toras Moshe, a religious seminary for English-speaking students.

Twersky's brother-in-law remembered him as a "gentle, saintly scholar."

Rabbi Jonathan Rosenblatt said that Twersky was also a "gifted and beloved teacher" who lived "in the image of a gentle God."

Rosenblatt is the senior rabbi of the Riverdale Jewish Center in the Bronx. He is married to Twersky's sister, Tzipporah (ZIHP'-oh-rah).

Twersky grew up in Boston and had lived in Israel for about 30 years.

Family members said, "He was a special man. Very humble. This is a huge loss. Imagine the sky shattering."

Twersky was the elder son of the late rabbi and author Rabbi Yitzhak "Isadore" Twersky of Boston. His grandfather, Soloveitchik, was one of the principle philosophers and founders of the Modern Orthodox movement.

Levine was born in the United States and emigrated to Israel after his marriage. He was a regular attender at the Kehillat Bnei Torah where he was killed. Eulogizing his father, his son, Rabbi Yerachmiel Levine said his father was in the middle of saying the Sherma (prayer) "when his soul left his body and the terrorists came and murdered him."

Kupinsky emigrated to Israel from the US and worked in computers.

Israeli authorities identified the British man as Avraham Goldberg.

(The Associated Press contributed to this report.)