A Delhi court will today hear a 1984 anti-Sikh riots case against Congress leader Sajjan Kumar, who is accused of instigating a mob to kill Sikhs. District Judge Poonam A Bamba is scheduled to record the statement of a key prosecution witness in the case and Kumar is directed to appear before the court. Three persons -- Kumar, Brahmanand Gupta and Ved Prakash -- are facing trial on charges of murder and rioting in the case pertaining to the killing of Surjit Singh in Sultanpuri.