SEOUL, Feb. 6 (Yonhap) -- The chairman and five employees of a local English education institution, well known for its English ability test preparation courses, have been indicted on charges of illegally recording questions of official English tests in violation of copyright law, prosecutors said Monday.

The Hackers Group chairman, surnamed Cho, and its five employees were indicted without physical detention for copying and leaking test questions for the Test of English for International Communication, or TOEIC, and the Test of English Proficiency developed by Seoul National University, also called TEPS, according to prosecutors.