A 16-year-old has been arrested and charged with a two recent shootings at a MARTA bus stop in front of Atlanta's McNair High School.

The youth was picked up earlier Wednesday for probation violation, said Dale Davis, spokesman for the DeKalb County School System. He was later charged with four counts of aggravated assault. Davis would not release the name of the teen and would not say whether he was a student at McNair High.

The arrest came one day after the shooting of 15-year-old student at the MARTA bus stop, located near the school's entrance on Bouldercrest and Key roads.

The student's injuries were not life-threatening.

The earlier shooting involved a 19-year-old standing at the same bus stop Friday night. In that incident, Davis said, students alerted officers at a basketball game inside the school that someone outside had a weapon. As officers approached the bus stop, they heard two or three gunshots.

The victim, who is not a McNair student, suffered non-life threatening injuries.