Turkish prosecutors are seeking 15-year jail sentences for a Turkish dentists who reportedly provided dental treatment for Islamic scholar Fethullah Gülen several times in the past, state-run Anadolu news agency reported on Monday.

Dentist Ali İlker Baştan and his wife Esma Kuriş Baştan, who is also a dentist, were detained by police last month and later put in prison on charges of membership in a terror organization, involvement in activities on behalf of a terror organization and aiding and abetting a terror organization.

According to the news agency, Baştan owns a dental clinic in İstanbul and paid several visits to the US to provided dental treatment to Gulen in the past.