Police have been granted another 36 hours to question Rabbi Chaim Halpern and three other Orthodox men who were arrested on Wednesday morning.
Rabbi Halpern was arrested in connection with investigations into alleged sexual assault and perverting the course of justice.
The other three men are being questioned on suspicion of perverting the course of justice in connection with his arrest.
Rabbi Halpern’s solicitor said: “He categorically denies any allegations of any wrongdoing.”
Hendon Magistrates granted a warrant of further detention on Thursday afternoon. Police were also allowed to retain money seized during the inquiry.