The Supreme Court upheld the conviction of Santosh Kumar Singh for the rape and murder of Priyadarshini Mattoo in 1996 but reduced his death sentence to life imprisonment. The DNA test conclusively proved Singh's involvement in the rape. Other circumstantial evidence included the recovery of Singh's helmet with a broken visor, glass pieces from the visor near the victim's body, and injuries on Singh's hand. While the trial court had initially acquitted Singh, the High Court convicted him and awarded the death penalty based on the circumstantial evidence. The Supreme Court affirmed the conviction but commuted the sentence to life imprisonment given Singh's age at the time of the crime.