The gunman who opened fire in a deadly mass shooting outlet mall in Allen, Texas, on May 6 died from a bullet shot by police that went through the suspect’s mouth and into his brain, an autopsy report found.

The Collin County medical examiner released its autopsy on 33-year-old Mauricio Garcia, which said the suspect was shot three times: once in the head, once in the right ear and once in the right arm.

The gunshot wound to the head reportedly went through Garcia’s mouth before piercing his brain, which according to the medical examiner, means the injury would be "immediately fatal."

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A girl is running away from a mall

A girl runs as other shoppers leave with their hands up after police responded to a gunman who shot and killed eight people and wounded at least seven others at Allen Premium Outlets mall north of Dallas, in Allen, Texas, U.S. May 6, 2023, in a still image from video. (REUTERS/Reuters TV, File)

None of the three shots appeared to be self-inflicted, the autopsy report noted.

"Findings support that the [gunshot wound] of head was shot by the law enforcement at the scene," according to the autopsy.

Garcia had a swastika tattoo on his upper left chest, the report said, as well as tattoos of a skull, panther-like animal, one that said Texas and another that said Fort Worth.

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memorial for victims

Jennifer Seeley signs a cross that stands by others at a makeshift memorial by the mall where several people were killed several days earlier, Monday, May 8, 2023, in Allen, Texas. Seeley, an employee at the Crocs store at the mall, said she was signing the cross for one of the victims, an acquaintance who worked as a security guard at the mall. (AP Photo/Tony Gutierrez, File)

The toxicology report also revealed Garcia did not have alcohol or illicit drugs in his system.

The gunman began his deadly rampage at about 3:30 p.m. local time on May 6, and security footage shows him exit what appears to be a Dodge Charger.

ALLEN, TEXAS, MALL SHOOTING SUSPECT MAURICIO GARCIA HAD BRIEF 3-MONTH STINT IN THE US ARMY

Mall shoppers leaving shooting scene

Texas police responded to reports of a shooting at Allen Premium Outlets on Saturday afternoon, May 6, 2023. (FOX 4 Dallas, File)

As soon as a police officer at the mall heard gunshots, he rushed to the sound, engaged the shooter and killed him.

Nine people were killed in the shooting, including Garcia, who left 10 others injured.

Police released body camera footage from a responding officer last month after a grand jury ruled that the use of force was justified under Texas state law.

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Despite having no criminal record, Garcia had a social media account where he displayed an interest in white supremacy while offering chilling hints of his research and planning for the attack.

He described mass shootings as sport and posted photos showing his large Nazi tattoos.

Fox News Digital's Bradford Betz and Adam Sabes contributed to this report.