The Seoul Central District Prosecutors Office is looking into political meddling allegations involving former prosecutor general Yoon Seok-youl after securing data from the Supreme Prosecutors Office.
The articles obtained include a mobile phone submitted by informant Cho Sung-eun and Telegram chat messages suggesting the delivery of complaints against pro-government figures.
Also included are files the Supreme Prosecutors Office found on a computer once used by Son Jun-sung, who is currently a human rights supervisor at the Daegu High Prosecutors Office.
Following analysis of the secured materials, prosecutors are expected to summon the informant Cho for questioning.
Earlier this week, Openminjoo Party chairman Choe Kang-wook and others filed a complaint with the Supreme Prosecutors Office against seven figures including the former prosecution chief on charges of power abuse related to the latest scandal.
The case was then handed over to the Seoul Prosecutors Office.