Anonymous callers are continuing to harass the families of senior Hadassah Hospital officials in the case of the three-year-old Jerusalem boy who doctors believe was nearly starved to death by his mother, according to a tape recording of the latest call released Monday. The harassment, which follows death threats made against Hadassah staff, persisted Sunday night, even though the child was discharged from the hospital earlier in the day. In the latest telephone harassment, an English-speaking caller, who said that he was calling from the United States, told the sister-in-law of Hadassah Deputy Director-General Dr. Yair Birnbaum at her Haifa residence that Birenbaum was carrying out experiments on the child with chemotherapy. "You should know that people are disgusted with him and the way he is behaving with Orthodox Jewish people," the caller said in heavy English, according to a tape of the call played on Israel Radio's lunchtime newsreel on Monday. "He should know that there will be demonstrations in the US, the UK and Australia against Hadassah Hospital," he continued. The caller, who has phoned the Hadassah family member's residence for four straight nights, went on to justify comparisons between Hadassah officials and the infamous Nazi known as Dr. Mengele who performed medical experiments on inmates. "He says he feels offended by being called Mengele," the caller said. "Well, he is trying all sorts of experiments on this innocent child...and treated him with chemotherapy." The caller added that every time family members tried to get the child, Birnbaum took him to social workers. "We are disgusted with the way he treats Jewish children," he said. Birenbaum's sister-in-law hung up the phone on Monday when asked for comment. Hadassah doctors were the first to suspect that the child was being abused by his mother, incurring the wrath of the Eda Haredit group as well as the woman's family. The father of the child is originally from London. The police said that they were investigating the threats as well as the harassment. Hadassah Hospital, which has vociferously condemned the threats, declined further comment on Monday. The woman, a resident of the city's Mea She'arim neighborhood who is a member of the insular Toldot Aharon hassidic sect, is expected to be indicted shortly on charges of child abuse.