New Delhi, Mar 13 (ANI): Social activist Kiran Bedi has expressed satisfaction at the verdict of the Delhi High Court upholding death sentence for four men convicted in the gang-rape and murder of a young medical student in December, 2012. Terming the Nirbhaya case a "model one", the former IPS officer said that the case was well investigated. Sensing that the accused would now approach the Supreme Court and the President thereafter for clemency, she said that a sense of closure will only be realized if the case is solved and the sentence upheld on an urgent basis.