Charleston shooter Dylann Roof's confession is chillingly nonchalant

Dylann Roof, the man who killed nine people in a South Carolina church, was calm while he confessed his crimes to federal agents, reports The Washington Post. 

Roof explained that the reason he chose to shoot and kill six women and three men inside a historic black church on July 17, 2015 was because he knew there would be a group of black people inside. 

The confession was revealed for the first time on Friday, which is the third day of Roof's trial in which he faces the death penalty. 

WATCH | Dylann Roof's confesses to the murder of nine black parishioners

Roof was apprehensive about some pieces of his confession, telling agents that he didn't always like talking about what it was he had done. 

“Well yeah, I mean, I just went to that church in Charleston and, uh, I did it,” Roof said to the agents. 

Roof wasn't even sure of how many people he had killed that day. 

When asked how many people he shot, Roof said, “Five maybe? I’m really not sure, exactly.”

Roof was quick to explain the motivation behind his attack. 

“I had to do it because somebody had to do something,” he said. “Black people are killing white people every day on the street, and they are raping white women. What I did is so minuscule to what they’re doing to white people every day all the time.”

Roof also said that information he found online shaped how he thought.