Fethullah Gülen’s nephew Tavus Bin Keysan Gülen was put in pretrial detention as part of an investigation into the Gülen movement, which the government accuses of masterminding the July 15 coup attempt, on Thursday.

Detained in Istanbul’s Umraniye district on Jan 6, Şamil is accused of establishing and leading a terrorist organization as the government labels the movement terrorist.

The nephew spent 12 days under custody at Sakarya police station, according to media.

Turkish government has so far detained 140,000 people and arrested some 60,000 over the faintest –true or alleged– links to the Gülen movement. Gülen, himself, have had his several relatives jailed so far.

Critics often blast the government for a massive purge it is carrying out that violates the principle of individual criminal responsibility.