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Next, let's take a look at the breaking news and investigations that made a video of sexual exploitation of a minor. The police counted the nicknames of the people who used the telegram chat rooms created by Joo-bin Cho, and there were about 15,000 except the overlap. The police plan to screen out the people who have paid the money and enter the room, that is, paid members, and start the investigation soon.

First, reporter Jeong Ban-seok.

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Since September of last year, the police have been tracking the 'doctor', capturing the content of the doctor's room from time to time.

As a result of the analysis, we identified 15,000 nicknames, excluding duplicate participants.

This is the total number of participants in the chat room as well as the paid members, but since one person can use multiple nicknames, the actual number of participants may decrease.

Among them, the target of the investigation is users whose identity has been identified by depositing virtual currency into Joo-bin Jo's account, the so-called 'wallet'.

A police official explained, "We identified a number of paid members who paid admission to the doctor's room, and we plan to conduct forced investigations such as seizure and search after joining them as early as this week."

Analysis of the digital devices used by Joo-Ju Cho is also speeding up.

The police, who confiscated nine mobile phones and 20 digital devices, such as laptops, are focusing on investigating the passwords of two mobile phones and laptop computers that Joe seems to have used recently.

More than 400,000 people agreed in two days to petition to reveal the identity of Kang Mo, a social worker who had mocked the murder of Joe and a girl.

Kang has already been put on trial for alleged personal information leaks and intimidation, but the police are also investigating the allegations of murder conspiracy.

(Video editing: Park player)