Hours after the Narcotics Control Bureau gave a clean chit to Aryan Khan, senior Congress leader P Chidambaram on Friday asked who will bear the responsibility for the young man's trauma and said in many cases, arrest comes first and investigation follows which was a "perversion" of the procedure established by law.

The Narcotics Control Bureau (NCB) on Friday gave a clean chit to Aryan Khan, son of Bollywood superstar Shah Rukh Khan, in last year's 'drugs on cruise' case in which he was arrested and spent 22 days in jail.