The Jacksonville sheriff says that the suspect was “100 percent lucid” during the shooting that lasted under 11 minutes.

A White gunman who killed three Black people at a Jacksonville Dollar General store Saturday legally purchased the two firearms used in the racially motivated attack, local law enforcement confirmed.

The man, identified Sunday as 21-year-old Ryan Christopher Palmeter of Clay County, Fla., on Saturday drove to Edward Waters University, a historically Black college, but was refused entry, according to the school. He then drove to the nearby store, where he opened fire using an AR-15-style rifle inscribed with Nazi insignia, authorities said.

Police described a methodic rampage that lasted less than 11 minutes and killed Angela Michelle Carr, 52; Anolt Joseph Laguerre Jr., 19; and Jerrald De’Shaun Gallion, 29.

Jacksonville police on Sunday said law enforcement had been called about Palmeter previously in a domestic incident, and he also had been held during a mental health crisis. But those cases did not result in a criminal record, so there was no legal reason to stop him from acquiring the guns he purchased this year between April and July.