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Dylann Roof formally indicted on murder charges

COLUMBIA, South Carolina - The man accused of killing nine people attending Bible study at a historic black church in South Carolina has been indicted on three new charges of attempted murder.

Prosecutor Scarlett Wilson said Tuesday that 21-year-old Dylann Storm Roof had been indicted on the state charges, related to people who survived the June 17 attack.

Roof was arrested last month and charged with nine counts of murder, one for each person killed. He also faces a weapons charge.

Roof's defense attorney did not immediately return a message seeking comment.

Federal authorities have not said whether they will pursue hate crime charges against Roof.

Roof is next expected in court in October on the murder charges. Online court records did not show any additional dates for the new charges.

After the attack, an apparent manifesto of Roof's popped up online. In it, he appears to write about his alleged plot, including why he picked Charleston as the site for the attack: "I have no choice. I am not in the position to, alone, go into the ghetto and fight. I chose Charleston because it is most historic city in my state, and at one time had the highest ratio of blacks to Whites in the country."

A law enforcement source told CBS News' Pat Milton that eye witness told authorities that Roof stood up in the church and said words to the effect that he was there to shoot black people, and then uttered other derogatory remarks.

The source said that a .45 caliber gun was found in the car when Roof was arrested during a traffic stop at around 11:15 a.m. The gun was apparently purchased by his father for his birthday, according to the source. No other weapons were found in his vehicle.

"He was cooperative with the officer who stopped him," Mullen said.

A law enforcement source told CBS News that at the time of the shooting, Roof was essentially homeless. He had no fixed address, and moved from place to place. The FBI is interviewing his parents.

A friend says Roof had told him recently that black people were taking over the world and that something needed to be done for the white race.