New Delhi: Congress president Sonia Gandhi has written letter to Delhi Chief Minister Sheila Dikshit asking for strict punishment for the guilty in the Delhi gang-rape case.Here is the full text of the letter:PromotedListen to the latest songs, only on JioSaavn.comAlso ReadShubman Gill's Clear Blame After GT's Terrible Loss To DC Following Lowest Score"Pagal Hai Kya?": Kuldeep Yadav Lashes Out At DC Teammate, Rishabh Pant Intervenes And Says This. Watch27-Year-Old Stabbed To Death In Delhi, Probe Underway: Cops