>> reporter: he left and went to a second dollar store, there he got out of his car and shot and killed a woman in her car before going inside the store where he killed two others. >> i heard pop, pop. i turn around and seen him drop. >> reporter: officers stormed the dollar general store looking for the suspect. you can see them advisably reacting when they hear a shot fired. authorities believe that that is when the gunman killed himself. authorities revealing monday that the shooter previously worked at a dollar tree store. writing left behind show he wanted to kill black people the sheriff says. >> manifesto is quite frankly the diary of a madman. >> reporter: the three victims august black, angela carr, an uber driver, jerrald gallion with a 4-year-old daughter and aj laguerre jr. who worked at the store. officials say there was nothing in the gunman's past to prevent him from legally buying these two guns, handgun and ar-15 style rifle emblazoned with swastikas. even knothough in 2017, he was t