The nine had been booked for allegedly committing various penal offences and breaching provisions of the Foreigners Act and Epidemic Act.
SP Ram Badan Singh said they left Saturday on a bus from Bhadohi with a police team accompanying them, and will reach Bangladesh through Kolkata and 24 Parganas district of West Bengal.
The authors of the third edition of the book titled 'Essentials of Medical Microbiology' also tendered an apology in this connection.
Justice Mukta Gupta said the status report be filed by the authorities within 10 days and listed the matter for further hearing on March 24.
Justice Mukta Gupta issued notice to the Ministry of Home Affairs, Delhi government and the Delhi Police seeking their stand on the petition filed by the Delhi Waqf Board.
Police had registered cases at different police stations in Lucknow and other districts under various IPC sections and the Epidemic Diseases Act.
The court also issued notice to the police and sought a status report in the fresh six petitions, filed through advocates Ashima Mandla and Mandakini Singh.
Appearing for the Centre, Solicitor General Tushar Mehta submitted that there are effective mechanisms in place to prevent spread of hate news.
The court had also discharged eight foreign nationals from six countries of all charges under which they were charge-sheeted in the absence of any record or any credible material against them.
The bench said once the petition has already been filed in the Supreme Court with similar prayers, it cannot keep it pending here.
The court directed to put up this case on December 15, 2020, in the list of fresh cases for the next hearing.
Mohammad Saad was accused of deliberately not informing the local authorities about taking part in the event and avoiding voluntary quarantine upon his return from Delhi.
The punishment for the offences for which they have been charged ranges from six months to eight years of imprisonment.
A bench headed by Chief Justice of India S A Bobde faulted the information and broadcasting ministry’s affidavit for not dealing with the applicability of the Cable TV Network Act in the case.