Walter's parents told investigators that their son has a history of mental illness and wasn't getting treatment, FBI agent Sean Thomas said in an affidavit filed to support the charge.

He even posted a meme regarding 'the two sides of mental illness' to his Facebook page in April 2020.

On November 19, Walter posted comments on Facebook next to a video of FBI Director Christopher Wray, threatening to kill him, Thomas said.

https://www.dailymail.co.uk/news/article-11459181/Michigan-man-arrested-threatening-kill-FBI-Director-Wray-Congressman-Garamendi.html
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