Shankar and his gang were found guilty of six murders, committed over a period of two years in 1988-1989.They were tried for the murders of Lalitha, Sudalai, Sampath, Mohan, Govindaraj and Ravi.The bodies of the victims were either burnt or buried inside residential houses.
Shankar's trial was completed by the chengalpattu sessions court; He was sentenced to death along with two of his associates, Eldin and Shivaji, on May 31, 1991.
During his trial Auto Shankar blamed cinema for "making a devil of him", but a month before his execution, he revealed to reporters a more sinister force. According to his account, he had kidnapped the girls for powerful state politicians, subsequently disposing of them after his patrons had raped them.  Auto Shankar was hanged until death in Salem Central Prison on April 27, 1995.
In 2002, five persons were sentenced to 6 months of Rigorous Imprisonment after having been found guilty by a Magistrate. The five persons were Shankar's brother, Mohan, Selva alias Selvaraj and the jail warders Kannan, Balan and Rahim Khan. They were found guilty of criminal conspiracy and resistance or obstruction by a person to his lawful apprehension.
Subsequently, Shankar's younger brother Auto Mohan was also found guilty of the six murders and was awarded three life sentences. Mohan had earlier escaped from the Chennai Central Prison in August 1990 and was re-arrested in Pune on June 25, 1992.