Roommate: Charleston church shooting suspect was 'big into segregation'

Roof's roommate told ABC News that Dylann Roof, the suspect in the Charleston church shooting,  is extremely racist and had planned this attack for six months.

Dalton Tyler, who said he has known Roof for seven months to one year, said he saw the suspect just last week.

>>Who is Dylann Roof?

"He was big into segregation and other stuff," Tyler told ABC News. "He said he wanted to start a civil war. He said he was going to do something like that and then kill himself."

Tyler said he met Roof through a good friend. He also said Roof's parents, with whom he said the suspect was "on and off," had previously bought him a gun but never allowed him to take it with him until this past week.

Roof's grandfather declined to comment.