Emanuel African Methodist Episcopal Church

"I went to that church in Charleston and I did it," he said, then laughed.

"Did you shoot them?" a law enforcement officer asked a calm and composed Roof.

"Yes," Roof replied, followed by another laugh.

Asked how many people he killed that day, the young man in the mushroom-shaped haircut replied calmly: "If I was going to guess, five maybe. I'm really not sure."

In the video, the self-described white supremacist said he opened fire with a Glock .45-caliber pistol.

Myra Thompson was remembered in a Monday service at Emanuel African Methodist Episcopal Church in Charleston. 

Five other victims of the deadly shooting had services there this weekend, bringing political and religious leaders to the historic African-American church.

Friends and family say the 59-year-old Thompson was a studious hard worker who led the church's property committee and served on its board of trustees.

At a court hearing last week, Thompson's widower told the white male suspect, Dylann Storm Roof, that the family forgave him and asked him to repent.