From NBC New York:

A note found in the car of a man charged with spraying deadly gunfire at a Tennessee church made reference to revenge for a white supremacist’s massacre at a black church in Charleston, South Carolina, two years earlier, law enforcement officials told The Associated Press.

The note could offer a glimpse into Emanuel Kidega Samson’s mindset at the time of Sunday’s shooting and a possible motive for the rampage, which killed a woman and wounded six other people. The Associated Press has not viewed the note, but it was summarized in an investigative report circulating among law enforcement. Two officials read to AP from the note.

The report said that “in sum and in no way verbatim,” the note referenced revenge or retaliation for Dylann Roof, the white supremacist who killed nine black worshippers at a South Carolina church in 2015 and has since been sentenced to death. It wasn’t clear what precisely Samson is alleged to have written about the Roof shooting, or whether his note contained other important details that might also speak to a motivation or state of mind.