Two Jehovah's Witnesses were recently given a prestigious parenting award, despite the group being regarded as "extremist."
The detention of Dennis Christensen is the first since Russia's Supreme Court upheld a ban on Jehovah's Witnesses nationwide.
Even though an appeal has yet to be heard, an order banning Jehovah's Witnesses in Russia has already had a significant impact.
Satanic Church members are marking their one-year anniversary as an officially recognized religion in Russia while Jehovah's witness branches have been eliminated.
Russia's Catholic Church has joined the chorus of groups condemning the country's ban on Jehovah's Witnesses.
The U.S Commission on International Religious Freedom has designated Russia a "country of particular concern" for the first time.
Russian police are targeting Jehovah's Witnesses during faith meetings.
The decision by Russia's Supreme Court placed Jehovah's Witnesses alongside terrorist groups like ISIS.
In April, Russia's Supreme Court will consider a request to ban the group.