Mass Maharaja Ravi Teja on Friday appeared before Special Investigation Team (SIT) probing the Hyderabad drug racket.
The actor reached Abkari Bhavan, the office of Prohibition and Excise Department of Telangana, around 10 a.m.
A four-member team of SIT officials began questioning the actor with regard to the racket busted in July.
He was summoned for questioning after his contact number was found in the call data of Calvin Mascrenhas and Zeeshan Ali, the two key accused arrested in the case.
Ravi's mother last week denied the allegations that he uses drugs.