Transcript for Stunning New Details From the Trial of Accused Church Shooter Dylann Roof
We move onto other news now, and the chilling moments in court today in Charleston, south Carolina. Dylann roof on trial in the murders of nine black worshippers at a bible study. They had asked him to join him in prayer. Tonight here, prosecutors revealing just how carefully they say dylann roof prepared. ABC's Steve so sun sosunsami in Charleston. Reporter: Jurors learned today this admitted racist and accused murderer, seen here entering this historic black church, had staked out the church several times, months before the killings in 2015. An FBI agent explains that a gps device in dylann roof's car shows he drove nearly two hours from his home in Columbia to the church in Charleston twice in February, again in April and then twice in may. In this cold-blooded FBI confess confession, roof admits to killing nine people and explains why he hates black Americans. I had to do it, because nobody else is going to do it. Nobody else is brave enough to do anything about it. Reporter: Police say they found more of these. Pictures of roof with confederate flags and even wearing white hoods on computers at his home. They found drawers and closets full of hollow-point bullets. Well, I actually bought them at a different Walmart. Not for any reason, it's just, I didn't have the money. Reporter: The trial could close soon, and the last witness will be one of three survivors who says roof told her that he would let her live so she could tell the story. David? Steve osunsami with us again tonight.
This transcript has been automatically generated and may not be 100% accurate.