1:48 PM PT -- The shooting suspect was identified as Colt Gray, a 14-year-old male student at the school, Georgia Bureau of Investigation Director Chris Hosey said in an afternoon press conference.

Two teachers and two students were killed, and nine others were injured, Hosey said.

Sheriff's deputies responded to reports of an active shooter at 10:20 a.m. Wednesday. Law enforcement personnel arrived at the school within minutes -- and the suspect surrendered immediately and was taken into custody.

Barrow County Sheriff Jud Smith said the 14-year-old gave up, got on the ground, and a deputy took him into custody. Smith declined to identify the type of gun allegedly used by Gray. Authorities have been in contact with the suspect's family. Gray is cooperating with investigators, Smith said.

A school resource office engaged with the suspect, Smith said, and "the shooter quickly realized that if he did not give up, that it would end with an OIS" -- an officer-involved shooting.

Gray will be charged with murder and tried as an adult, Hosey announced.

12:21 PM PT -- Vice President Kamala Harris just spoke about the shooting during a public appearance in New Hampshire ... lamenting the tragedy and calling it totally outrageous that parents need to worry about their children coming home alive.

12:05 PM PT -- CNN is now reporting Apalachee High School officials received a phone threat this morning before the shooting. The caller warned there would be a shooting at five different schools, including Apalachee.

A shooting on a high school campus in Winder, Georgia left multiple people dead and injured, before a suspect was taken into custody Wednesday -- according to the county sheriff.

In a news conference, the sheriff said 2 people were killed, though local reports indicate as many as 4 were killed. Those numbers are expected to be updated throughout the day -- another press conference was scheduled for later in the afternoon, according to the sheriff.

Barrow County Sheriff's deputies responded to a report of an active shooter at the school at about 9:30 AM, according to Sheriff Jud Smith.

Terrifying aerial shots from WSB-TV showed a heavy police presence and at least five ambulances on the scene at Apalachee High School by 10:30 AM local time -- and two medical helicopters were spotted airlifting patients out.

Officers responded in force, evacuating students to the school's athletic field.

FBI special agents also swooped in to help local law enforcement, according to a bureau spokesperson.

The Barrow County Sheriff’s Office confirmed once the scene was secured, students were finally released around 11:30 AM and parents were allowed to pick them up. Other schools in the area also went into "soft lockdown" as an extra precaution.

Georgia Gov. Brian Kemp said in a statement he’s thrown all state resources into the mix and is teaming up with local, state and federal agencies to handle the situation and proceed.

No suspect was immediately identified, and no motive was released.

Apalachee High is located in Winder, a city in Barrow County, about 50 miles northeast of Atlanta.