What happened to LUNA was all over the news this past days. The sudden collapse from $120 down to almost $0 brought a great lost for lots of investors and LUNA holders.
South Korea decided to conduct an emergency investigation about this as reported by Yonhap News
An official of a local crypto exchange operator was quoted as saying:
"Last week, financial authorities asked for data on the amount of transactions and investors, and sized up the exchanges’ relevant measures."
They also plan to analyze the reason behind the collapse. I hope this helps and still looking forward that LUNA can recover so investors can also get their money's worth