A shooting near an open-air mall on Saturday evening in Atlanta has left one person dead and five others injured, including one critically, according to the Atlanta Police Department.

The latest: The individual who was killed was 12 years old, Atlanta Mayor Andre Dickens said Sunday.

• "The individuals that were involved ... knew each other, they were not strangers," Atlanta Police Chief Darin Schierbaum also said Sunday, adding that "they had had a conflict earlier in the month."

Driving the news: The shooting occurred after a group was escorted off of Atlantic Station property, police Lt. Germaine Dearlove said Saturday night. The group then moved to the 17th Street bridge in Atlanta, where a "dispute occurred that escalated to gunfire."

• One male was deceased on the scene as of Saturday night and five other victims were transported to area hospitals, he said.
• The group was removed from Atlantic Station property for "unruly behavior" and curfew violations, Dearlove said.
• Homicide investigators were on the scene on Saturday evening to investigate the scene and "establish leads on the case and also suspect information," Dearlove said.
• The victims are believed to be between the ages of 15 and 21, Dearlove said.

The big picture: A 3pm curfew was implemented for Atlantic Station in January, per the Atlanta Journal-Constitution, which requires youth under 18 to be accompanied by a parent or guardian.

• No individuals under 21 are permitted on the property after 9pm, per Atlantic Station.
• Saturday's shooting comes after a spate of shootings at Atlantic Station over the last several months, per the Atlanta Journal-Constitution.

Editor's note: This story has been updated with additional details.