Turkish police have detained at least 543 people in 59 provinces across Turkey for “providing financial support” to families of imprisoned “Gulenists” over alleged links to the 2016 coup attempt.

According to the state-run Anadolu news agency, the suspects are accused of either receiving financial assistance or distributing financial assistance sent by Gülen followers abroad to the families of people jailed over links to the Gülen group or removed from public service for the same reason.

Following the operations, Interior Minister Süleyman Soylu said some 200 other people were also facing detentions over similar accusations. According to Soylu, the operation was carried out by the Anti-Smuggling and Organized Crime Department (KOM), the Counterterrorism Bureau (TEM) and the Cybercrime Department in coordination with the Security General Directorate’s intelligence unit and the Financial Crimes Investigation Board (MASAK).

The Turkish government accuses the Gülen group of masterminding a coup attempt on July 15, 2016 and labels it a “terrorist organization.” The group denies any involvement in the coup attempt or any terrorist activity.