New York (CNN Business) Reddit has "quarantined" its subreddit "The_Donald," the most popular section of its site for supporters of President Trump because of what it said were "threats of violence against police and public officials."

The quarantine means that people visiting The_Donald will see a warning message before accessing the subreddit and its posts will not appear in Reddit search.

"The reason for the quarantine is that over the last few months we have observed repeated rule-breaking behavior in your community," Reddit staff wrote to the volunteer moderators of The_Donald on Wednesday.

The message placed on The_Donald on Wedneday.

"Most recently, we have observed this behavior in the form of encouragement of violence towards police officers and public officials in Oregon," Reddit added.

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