US authorities say a 14-year-old has been wounded in a shooting at an Atlanta middle school and a suspect has been taken into custody.

Atlanta police spokesman Carlos Campos said the wounded student has been taken ‘‘alert, conscious and breathing’’ to Grady Hospital.

He said the suspect has been tentatively identified as a student and all other students at the school are safe.

Campos said the teen was shot outside of the school building.

Atlanta Fire Captain Marian McDaniel said the teen was shot in the head.

McDaniel said a teacher suffered minor cuts and bruises, but was treated on the scene about 3km south of downtown.

TV news helicopters show a swarm of Atlanta police officers at the school.

AP