Dylann Roof listed other churches in South Carolina before attacking Emanuel AME

Investigators found a handwritten list of churches in South Carolina inside the car of Charleston church shooting suspect Dylann Roof when he was arrested last year. This was revealed to the jurors at the trial on Monday.

Roof, who is an avowed white supremacist, is currently on trial for killing nine people at the Emanuel African Methodist Episcopal Church during a Bible study meeting in June 2015. He confessed that he targeted the church because he knew that black people would be gathered there, Reuters reported.

State crime scene investigator Brittany Burke testified that one predominantly black Baptist church, a black Roman Catholic church, as well as other African Methodist Episcopal churches were included in Roof's handwritten list. She revealed that Roof also recorded the addresses, phone numbers, and the schedules of the churches.

Burke said that the investigators also found a laser sight device for a gun, receipts for his gun and ammunition, a Confederate flag, and two American flags inside Roofs car. According to Time, there were also journals and letters that were addressed to Roof's parents.

Ronnie Thrailkill, the manager of the gun store where Roof purchased a pistol and ammunition, also testified at the hearing.

A security video has shown that Roof bought the weapon and filled out a background check form at Shooter's Choice in West Columbia on April 11, 2015. He returned on April 16 to pick up the .45-caliber Glock and bought five magazines, said Thrailkill. He reportedly went back to the store on April 27 to purchase additional magazines.

The store was allowed by law to sell the gun to Roof after a three-day waiting period for a background check. Thrailkill testified that the store only received notification that Roof was ineligible to purchase a weapon on June 29, 2015, 12 days after the massacre occurred.

Roof had admitted to using narcotics to the police when he was arrested at a mall in February 2015. Federal Bureau of Investigation Director James Comey said that the admission should have prevented him from buying the gun.

"How many times do you receive a denial of the sale of a gun after the gun has been used in a crime?" Assistant U.S. Attorney Jay Richardson asked Thrailkill. "Never," the store manager replied.

Roof is facing a death sentence for hate crimes resulting in death, obstruction of religion, and firearms violations. He is also expected to be tried for murder charges in state court next year.