An alleged portrait is beginning to emerge of the 17-year-old boy who opened fire at his Nashville high school on Wednesday, killing one student and wounding a second student, according to police.

Analysts with the ADL Center on Extremism "have located a manifesto and social media accounts believed to belong to the shooter, where he shared a range of incel, accelerationist, white supremacist, antisemitic & anti-Black content," the organization wrote in a Wednesday post on X (formerly Twitter ).