Most shooters got their guns legally, didn't have diagnosed mental illness, new FBI report says

As mass shootings filter in and out of the news cycle at an almost dizzying pace with each new tragedy, the FBI has continued to probe why these atrocities continue and what can be done to stop them.

In a new report released Wednesday, the bureau shed light on behaviors of shooters before they acted out, finding most obtained a gun legally and did not have diagnosed mental health issues, points that run contrary to some popular beliefs.