Sobotta, wanted under the International Criminal Police Organisation's urgent apprehension notice issued by Germany, was detained during the "KUYU-39" operation conducted in the Sisli district in Istanbul, Yerlikaya said, without specifying the time of the operation, Xinhua news agency reported.
Investigators found out that Sobotta had coordinated with others and sold various narcotics through an encrypted mobile communication application, amassing significant profits, Yerlikaya said.
Turkey, often used by drug dealers as a transit hub, has ramped up its crackdown on drug smuggling since last year.