According to the news agency APThe masked gunman, a 20-year-old white male, has not been named.
The man broke into a Dollar General store in Jacksonville on August 26 at approximately 14:00 (local time).

Police, ambulances in front of the crime scene on the afternoon of August 26 in Jacksonville, Florida – Photo: AP
The gunman shot and killed three people, all of whom were black. The incident took place in a predominantly black neighborhood and the perpetrator also left a racist post, leading police to conclude that it was a premeditated attack.
Jacksonville Police Chief TK Waters said there was no evidence the shooter was a gang member.
At the time of the shootings, the masked gunman was carrying a Glock pistol and an AR-15 semi-automatic rifle while wearing a bulletproof vest. He committed suicide after the death of 2 men and 1 woman in the store.
The gunman also left notes that led investigators to believe he carried out the shootings because it was the five-year anniversary of another gunman killing two people during a video game tournament, Waters said. Played video games in Jacksonville and then committed suicide.
Prior to arriving at the scene, the suspect was seen on the campus of Edward Waters University, located a short distance away. It is not clear what the gunman’s intentions were when he went to this school – a historic school for colored people in the area.