A cousin of South Carolina shooting suspect Dylann Roof claims his hatred of black people was caused by an experience he had where a girl he liked "started dating a black guy."

Storm allegedly opened fire in a historic black church late last week, killing nine innocent and unsuspected worshippers after they had welcomed him to a bible study class they were conducting.

Since then, investigators have desperately sought to piece together a sketch of Roof in their efforts to answer the maddening question of how and why he could have committed such a dastardly act.

"Dylann was normal until he started listening to that white power music stuff," Scott Roof told The Intercept. "He kind of went over the edge when a girl he liked starting dating a black guy two years back."

Scott Roof claims his cousin was no longer the same person after that experience and deemed it a turning point for him.

Since taking Dylann Roof into custody over the weekend, investigators have unveiled a "manifesto" he allegedly hand wrote and posted online that delves into many of the racist views and attitudes he seemed to harbor.

"I am not in the position to, alone, go into the ghetto and fight," the New York Daily News reports the hate-filled docs read. "We have no skinheads, no real KKK, no one doing anything but talking on the Internet."

The growing circumstances surrounding the senseless violence conjure memories of Elliot Rodger and the deadly rampage he went on just about a year ago.

Radar reports that in his manifesto, Rodger also seemed troubled by his inability to approach girls before shooting up a sorority house, once reflecting, "How could an inferior, ugly black boy be able to get a white girl and not me?"