French police arrested a notorious hacker who’s suspected of forming part of an extortion scheme that targeted a Finnish psychotherapy practice and its patients.

Aleksanteri Tomminpoika Kivimäki, 25, is the focus of a European arrest warrant issued last October in Finland. He’s been charged with participating in the hack of Vastaamo Psychotherapy Center. The now-defunct private company, based in Helsinki, provided mental health services via 25 therapy centers, and served as a contractor for Finland’s public healthcare system (see: Patients Blackmailed 2 Years After a Breach).