The Delhi SIT of the Narcotics Control Bureau (NCB) on Sunday questioned Arbaaz Merchant and Achit Kumar in connection with the drugs on cruise case for over nine hours, an official said.

The duo was summoned by the Special Investigation Team (SIT), headed by senior officer Sanjay Kumar Singh, which was entrusted with the investigation of six cases, including the cruise drugs case involving Bollywood superstar Shah Rukh Khan's son Aryan Khan.