On December 1, former AOA member MIna uploaded a photo with a dark and strange caption. It pointed out to an anonymous murderer. Netizens speculated that the message is related to the death of Sulli and Goo Hara. A lot of her fans got worried commented on the post saying, "everything will be fine. Keep fighting Mina."

The Instagram message is as follows:

"I hope you'll see things you didn't see someday.The murderer is supported by a large number of people.And if you're a human being, you'd like you to feel guilty about this.I hope this year ends soon."

Stay strong Mina.