An Iranian man under arrest since July is believed to be the ringleader of drug dealers who sold an estimated ¥200 million worth of narcotics to 20,000 customers on the streets of the ritzy Azabu, Shirokane and Takanawa neighborhoods in Minato Ward, Tokyo, since last November.

The Kanto-Shinetsu Regional Bureau of Health and Welfare said Thursday that the suspect, who has identified himself as Abolfazl Zarbali, 42, was arrested in July.

He has been indicted for allegedly managing four other Iranian men who possessed and tried to sell illegal drugs, including 20 grams of stimulants and 42 grams of cocaine, out of apartments in Minato Ward from May to July, said Katsuhiro Sakata of the bureau's Narcotics Control Department.