This is a developing story.

Colt Gray, the alleged gunman who opened fire at Apalachee High School in Barrow County, Georgia, killed four people and wounded at least nine Wednesday morning when he began shooting at innocent victims inside the school, police said.

At approximately 10:20 a.m., about two hours after classes started in Apalachee, the Barrow County Sheriff’s Office responded to reports of an active shooter.

“Within minutes, police and two school resource officers were on the scene,” Barrow County Sheriff Judd Smith told reporters at a news conference Wednesday afternoon.

Georgia school shooting: live updates

People leave Apalachee High School after a shooting at the school on Wednesday, September 4, 2024, in Winder, Georgia. (AP photo/Mike Stewart)

“When they encountered the suspect, he immediately surrendered to the officers and was arrested.”

According to officials, the four victims were two students and two teachers.

According to police, the surviving victims were taken to local hospitals to be treated for varying degrees of injuries.

CLICK HERE TO GET THE FOX NEWS APP

Gray, a 14-year-old Apalachee High School student, will be charged with murder and prosecuted as an adult, Smith said.

An ambulance leaves Apalachee High School after a shooting at the school on Wednesday, September 4, 2024, in Winder, Georgia. (AP photo/Mike Stewart)

GEORGIA HIGH SCHOOL SHOOTING: 4 DEAD, 1 SUSPECT IN ARREST, AUTHORITIES SAY

Local law enforcement is coordinating both the investigation and prosecution with Piedmont Judicial District Attorney Brad Smith.

“The priority for us, in this investigation, is to gather all the facts,” Smith said. “This is a murder investigation.”

Georgia police have not yet released the identities of the victims.