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Georgia school shooting: 5 key questions investigators are asking about accused teen killer

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Matthew Fagiana, a retired police sergeant and law enforcement consultant, told Fox News Digital that Georgia's top law enforcement agencies are continuing to investigate Colt Gray's motivation while simultaneously working on ways to prevent future mass shootings in the community.

The suspected shooter, 14-year-old Gray, opened fire at the high school, killing 2 teachers and 2 students.

Women cry while attending a vigil at Jug Tavern Park following a shooting at Apalachee High School in Winder, Georgia, U.S. September 4, 2024.  (REUTERS/Elijah Nouvelage)

The suspected shooter was identified as 14-year-old Colt Gray, a student. (The Barrow County Sheriff's Office)

1. What is the history of the suspect?

"Authorities will develop a chronological history of the suspect leading up to the shooting," he said. "And a deep look into the suspect's past for things such as interactions with the victims, the existence of any indications of violent behavior, statements or social media posts that could help them develop a motive, and recent internet history."

2. What was the suspect's pathway to the school?

The law enforcement expert said that investigative units would likely meticulously comb through Gray's home as well as the high school.

"I can only assume that the crime scene at the school is quite large," he said. "Those types of scenes require a very meticulous examination and collection of evidence – things like logging locations of evidence, spent casings."

A medical helicopter is seen in front of Apalachee High School after a shooting at the school Wednesday, Sept. 4, 2024, in Winder, Ga.   (AP Photo/Mike Stewart)

Fagiana said that law enforcement will likely attempt to reconstruct the scene in an attempt to reconstruct the shooter's pathway through the school.

"They’re going to reconstruct the scene and be able to show an accurate picture of the suspect's entry and his path throughout the shooting," he said.

3. What prompted the mass shooting?

Fagiana said that investigators are attempting to answer what prompted the suspected shooter to open fire.

"One important piece of the suspect being taken into custody will be the interviews he provides to investigators," he said. "Any time we have someone who commits a mass killing, one of the most important questions we are trying to answer is the 'why.'"

Georgia agencies provide an update on the Apalachee High School shooting on Thursday, Sep. 5. (Fox News Digital/ Mollie Markowitz)

In addition to two counts of second-degree murder, 54-year-old Gray was also charged with four counts of involuntary manslaughter and eight counts of cruelty to children, according to the GBI.

4. What will mitigate risk to prevent future mass shootings?

Fagiana said law enforcement and agencies are considering what steps in the future that will help mitigate future mass shootings.

"So when a suspect is taken into custody, law enforcement and experts on many levels will hope to use his statements and evaluations as a chance to mitigate the likelihood of these events happening again," he said. "I think most people agree that individuals who commit these type of crimes have something psychologically that differs from that of most of us – people who would never consider doing something like this."

People attend a vigil at Jug Tavern Park following a shooting at Apalachee High School in Winder, Georgia, U.S. September 4, 2024.  (REUTERS/Elijah Nouvelage)

5. How can law enforcement support the local community?

"An extremely significant priority is supporting the families of the victims right now," he said. "They’re hurting and need answers and law enforcement will remain committed to addressing their needs throughout these next several days."