OK this is the second article I've read on this, and i still havent quite understood this. Maybe someone with more of an understanding of the korean justice system can explain it.
It seems that the police have collected evidence of a potential crime, but they havent charged Lee yet. But they still wanted to put him in pre-trial detention? Unless there's a concern that he could do things like destroy further evidence, witness tampering, etc. I would have thought pre-trial detention was unlikely to be granted in any case. And if they have so much evidence, then why havent they charged him yet?
Maybe there is something specifically Korean i havent understood from the articles?