Police arrested four men today in Barnet in connection with investigations into sexual assault and perverting the course of justice.
A 54-year-old is in custody at a north London police station on suspicion of sexual assault and perverting the course of justice.
Three other men, aged 62, 64 and 25 were also arrested on suspicion of perverting the course of justice over the arrest of the first man.
Police said they could not give further details but inquiries continue.
Jewish community sources said that one of the addresses visited by police was in Bridge Lane, Golders Green.