Mr Hakak said the municipality had created a hotline that parents and friends of the Jewish women could use to inform on them.
"We can't tell the girls what to do but we can send a psychologist to their home to offer them and their parents advice," he said.
In addition, civil marriage is banned in Israel, meaning that in the small number of cases where Jews and Arabs want to wed, they can do so only by leaving the country for a ceremony abroad. Dr Yuval Yonay, a sociologist at Haifa University, said the number of interracial marriages was "too small to be studied".
"Separation between Jews and Arabs is so ingrained in Israeli society, it is surprising that anyone manages to escape these central controls." The team in Petah Tikva, a Jewish city of 200,000 residents, was created in direct response to news that two Jewish girls, aged 17 and 19, were accompanying a group of young Arab men when they allegedly beat a Jewish man, Leonard Karp, to death last month on a Tel Aviv beach. The girls' involvement with the Arab youths has revived general concern that a once-firm taboo against interracial dating is beginning to erode among some young people.
In sentiments widely shared, Mr Hakak, a spokesman for Petah Tikva municipality, said "Russian girls", young Jewish women whose parents arrived in Israel over the past two decades, since the former Soviet Union collapsed, were particularly vulnerable to the attention of Arab men.
Dr Yonay said Russian women were less closed to the idea of relationships with Arab men because they "did not undergo the religious and Zionist education" to which more established Israeli Jews were subject.