NEW DELHI: Observing that national security is of paramount importance and reasonable restrictions could be imposed on civil liberties of the persons under UAPA in the interest of the country's sovereignty and integrity, SC Wednesday cancelled the bail granted by Madras HC to eight PFI members and directed them to go back to jail. A bench of Justices Bela M Trivedi and Pankaj Mithal said HC committed gross error in not considering the evidence in its proper perspective and in recording a perverse finding to the effect that there was no material to suggest the commission of any offence. The court agreed with the submission of advocate Rajat Nair who, on behalf of NIA, submitted that the HC order was patently wrong as it failed to appreciate the seriousness of the charge against the accused.