SK Group's second-ranked leader Dae-sik Cho, chairman of the SK Supex Pursuit Council, was subjected to a 15-hour prosecution investigation.

Seoul Central District Prosecutor's Office, which has been investigating allegations of corruption by SK Networks Chairman Shin Shin-won, investigated Chairman Cho as a suspect over a period of 15 hours from 10 am to 0:40 am on the 7th.

The prosecution is looking into the process by which SKC invested 70 billion won in capital increase of SK Telesys in 2015, which was in a state of capital erosion.