NEW DELHI: Nearly three decades after Prime Minister Indira Gandhi's assassination triggered riots that killed thousands of Sikhs, Congress leader Sajjan Kumar will face trial for his alleged role in a murder in Delhi's Sultanpuri area.The Supreme Court on Tuesday dismissed a petition by Kumar and another co-accused challenging the trial court's decision three-and-a-half years ago to frame murder charges against them. The Delhi High Court too had rejected Kumar's plea against the trial court order.In July 2010, the trial court framed charges under several provisions of Indian Penal Code including Section 302 (murder) and rioting against Kumar, Brahmanand Gupta, Peru, Khushal Singh and Ved Prakash Pial for their alleged role in the killing of a man in Sultanpuri area during the anti-Sikh riots . Khushal Singh died during pendency of the case.A bench of Justices A K Patnaik and V Gopala Gowda dismissed the appeals filed by Kumar and Brahmanand Gupta after the CBI opposed their pleas on the ground that the HC, after going through the evidence, had found that the trial court had strong suspicion about their involvement in the crime. However, the HC had rejected a plea for framing "conspiracy” charge against the accused.The CBI had filed two charge-sheets against Kumar and others in January 2010 in the riots cases, which were registered in 2005 only after specific recommendations of Justice G T Nanavati Commission which inquired into the sequence of events leading to the riots and violence.