(JTA) — The former principal of a Brooklyn yeshiva, along with three of his sons, are wanted for molesting four of his children over 15 years.

New York police are looking for Rabbi Gershon Kranczer, 58, and one of his sons, Asher, 21, who are believed to have fled to Israel, according to reports. Son Yechezkel Kranczer, 24, turned himself in to the police on Dec. 2 and was released on bail, and a third son, 15, was arrested.

The abuse reportedly came to light after one of the daughters, 20, told a co-worker at the yeshiva where she works as a teachers’ aide that the rabbi had been molesting her for 15 years, the New York Daily News reported.

Gershon Kranczer and his three sons are accused of sexually abusing the four sisters — ages 20, 19, 17 and 8 — numerous times in the past few years.

Gershon Kranczer is the former head of Yeshiva Tehila L’Dovid, which serves children with special needs. He and his wife have 14 children aged 10 to 28.

New York City children’s services officials reportedly removed the minor children from the home.

