A Delhi court on Monday convicted four members of the prestigious President's Bodyguards in the six-year-old Buddha Jayanti Park gang rape case. Harpreet Singh and Satyender Singh were found guilty of raping a 17-year-old student of a Delhi University college while two others -- Kuldeep Singh and Manish Kumar -- were convicted for helping them commit the offence. The victim, who had gone with her boyfriend Ashish to the park near Rashtrapati Bhavan on October 6, 2003.