The mother of the suspect in the Indianapolis FedEx mass shooting warned the FBI last year that he might attempt 'suicide by cop'

https://www.insider.com/indianapolis-fedex-gunman-suspect-fbi-suicide-by-cop-2021-4

The FBI Keeps Missing Mass Shooters Before It’s Too Late

https://dailycaller.com/2018/02/15/fbi-missing-mass-shooters-florida-nikolas-cruz-omar-mateen/

Now this next bittakes the fucking cake- after years of using mentally ill assets crafted by  FBI shrinks to carry out mass shootings guess who did a study to debunk that?

FBI Study: Most Mass Shooters Are Not Mentally Ill

There are many theories about what motivates mass shooters.One common one holds that every active shooter is mentally ill.

But a new study by the FBI calls that notion into question, showing that the vast majority of mass shooters do not have a diagnosed mental illness.

The study, released Wednesday, looked at 63 active shooters between 2000 and 2013, focusing on the shooters' behaviors prior to their attacks.

While most shooters experienced mental health "stressors" such as anxiety and depression, the researchers found that only 25 percent had been diagnosed by a health professional with a mental illness "of any kind" prior to an attack. Of those diagnosed with a mental illness, three had a psychotic disorder, a condition that is sometimes associated with violence.

https://www.voanews.com/usa/fbi-study-most-mass-shooters-are-not-mentally-ill