Edward Waters University, a historically black college, turned away the Jacksonville gunman on the day of his mass shooting.

The shooter, who police described as a white man in his 20s, confronted an on-campus security officer and refused to identify himself. As a result, the officer asked the man to leave, which he did "without incident," according to the school.

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Afterward, authorities say he engaged in a shooting around 2 p.m. at a Dollar General near the university's campus situated in a predominantly black neighborhood in Jacksonville. Two men and one woman were killed as a result. The gunman also killed himself after reportedly using a Glock handgun and an AR-15-style semiautomatic rifle, onto which he had painted a swastika at the store. He was also wearing a bullet-resistant vest.

Students at Edward Waters University were subsequently kept inside their dormitories as a precaution as police responded to the scene of the shooting, the school said in a statement. No students or faculty are believed to be involved.

Police would later call the mass shooting a "racially motivated" crime. Jacksonville Sheriff T.K. Waters would go on to claim the gunman "hated black people” at a news conference late Saturday.

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"This guy killed himself rather than face the music and accept responsibility for his actions," Gov. Ron DeSantis (R-FL) said of the shooter, whom he referred to as a "scumbag." "He took the coward’s way out.”

The FBI has opened a federal civil rights investigation in regard to the incident.