Superstar Shah Rukh Khan's son Aryan Khan was today cleared of all charges in the drugs case over which he spent 22 days in a Mumbai jail last year. The Narcotics Control Bureau (NCB), in a chargesheet, said no drugs were found on Aryan Khan and there was no "substantial evidence" to charge him and five others. Fourteen other accused have been charged by the anti-drugs agency. Aryan Khan and his father Shah Rukh Khan are relieved, said senior lawyer Mukul Rohatgi, who represented Aryan Khan in court and secured bail for him.