Patrick Crusius was identified as the suspect in the shooting at Walmart near Cielo Vista Mall in El Paso, Texas, by multiple news outlets including NBC, CNN and USA Today. Crusius, 21, is from the Dallas/Fort Worth area and is currently in police custody.

Officials said during a press conference there were 20 people dead and 26 injured. Officials also confirmed the existence of a manifesto, which they said is a part of their investigation. They did not confirm the manifesto was written by the suspect. Law enforcement told ABC News he told them he wanted to kill as many Mexicans as possible.

Today’s mass shooting is the deadliest mass shooting since October 1, 2017, the day of the Las Vegas mass shooting at Mandalay Bay.

The state of Texas will lead prosecution on the suspect. They plan to charge him with capital murder. Officials also referenced possible investigations into hate crime, but would not define a motive in the early stages of the investigation.

“Not speaking about this particular incident, which is still under investigation, but the manifesto narrative is fueled by hate, and it’s fueled by racism and bigotry and division,” U.S. Rep. Veronica Escobar said at the press conference.

She said “strong statements” will be forthcoming if a hate-crime motive is determined, “but for now, we’ll let the investigation continue,” she said.

The shooting was reported at 10:39 a.m. Police arrived on the scene six minutes later, officials said. Law enforcement declined to identify the suspect, saying he was a 21-year-old man from Allen, Texas.

Area hospitals reported there were a total of 24 injured people among the hospitals, including two children. Also among the injured were military service members from Fort Bliss, according to local news reports.

Police scanner traffic from the area suggested that Crusius was in custody about noon local time. The FBI and ATF responded to the scene, alongside the El Paso Police Department and other state and local police departments.

A motive for the attack has not been officially confirmed by police, but CNN reports that an online posting that appears to have been made by the suspect is being investigated by the FBI.

The shopping area, near Cielo Vista Mall, is close to the United States border with Mexico. It is a popular location to shop for people on both sides of the border. License plates from both the United States and Mexico appear in the parking lots, NBC reported.

“We must do one thing today, one thing tomorrow and each and every day after this,” Texas Governor Greg Abbott said during a press conference. “We must unite.”

A Walmart employee told KTSM she thought boxes were being dropped when she first heard the gunfire. She asked to be identified only by her first name, Leslie.

“I thought it was just like loud boxes being dropped or something, until they got closer and closer,” she said. “That’s when I looked at my co-worker, and we looked at each other like shocked and scared.”

She said she tried to rescue as many people as she could.

“I got all the people that I could. I even found a little girl that was missing from her parents, and I got her, too. I tried to get as many people as I could out,” she said.

There were thousands of people inside the Walmart when the shooting began, according to police.

Adriana Quezada, 39, was in the store with her two children. She initially thought the gunshots were sounds from construction work.

“I heard the shots but I thought they were hits, like roof construction,”she told the Associated Press.

Here’s what you need to know about Patrick Crusius and the shooting:

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1. Crusius Was Taken Into Custody ‘Without Incident’

#BREAKING Surveillance photos of El Paso Walmart shooter https://t.co/DdvohmZ3oo—
Matthew Keys (@MatthewKeysLive) August 03, 2019

The suspect, identified by multiple sources as Patrick Crusius, was driving a grey vehicle, according to police scanner chatter. Early reports indicated the suspect had an AK47. That information was not immediately confirmed by police. Local reported Mills Hayes tweeted that the suspect was taken into custody “without incident” and that officers did not fire any shots during the arrest.

El Paso Police Chief Gregory K. Allen said during an evening press conference, “he surrendered to approaching officers.”

He did not reveal what type of gun was used in the attack, but said it was a high-powered weapon capable of causing significant damage in the crowded store. Walmart was especially busy Saturday with a high number of back-to-school shoppers.

“If you’re firing randomly at people, you can cause a lot of damage,” he said.

Police discussed recovering the weapon on the scanner but did not specify what type of weapon it was. At about 12:40 p.m., scanner traffic indicated that the police had recovered the weapon as well as the suspect’s car.

Asked what can be done to prevent this type of mass catastrophe in the future allegedly committed by “a white man with a manifesto,” Allen said, “That’s for a psychologist to answer.”

Texas Governor Greg Abbott also related the mass shooting to mental health.

“The bottom line is mental health is a large contributor to any type of violence or shooting violence,” he said.

He said Texas was grieving for El Paso, where a normal day of shopping became a deadly day for the community.

“Texas grieves for the people of El Paso today,” he said.

Abbott asked people to remember El Paso in its prayers and to keep their loved ones close.

“For every mom and dad, for every son and daughter, we ask that you put your arms around your family tonight and give them a hug and let them know how much you love them,” he said.

Officials also thanked law enforcement for their rapid response. The shooting was reported at 10:39 a.m. and the first law enforcement officer was on the scene at 10:45 a.m., Allen said at the press conference. Other responding agencies included the FBI and border patrol, among others.

“Everyone that carries a badge in this town pretty much showed up to this particular scene,” he said.

Miguel Rodriguez, a witness, told The Daily Beast the gunman, “started shooting everyone, aisle by aisle, with rage.”

Witnesses told CBS 4 News that the suspect possibly stopped shooting because he ran out of ammunition.

Vanessa Saenz told Fox News Crusius seemed “very nonchalant, like he was on a mission.”

He was “just pointing at people and shooting straight at them. I saw about three or four just fall to the ground.” At that point, she was at a stop sign while other cars were passing. “He was just shooting randomly, it wasn’t to any particular person,” she said.

Scanner chatter was focused on Walmart at the Cielo Vista Mall. Police also said on the scanner they were sending officers in to complete “tactical searches” in the mall.

Crusius has not yet been charged. It is not clear if he has hired an attorney.

Walmart is not a part of the Cielo Vista Mall. It is located nearby. The mall was put on lock-down and searched by law enforcement.

Walmart issued a statement on Twitter saying they were “in shock” following the mass shooting.

The owner of the mall made a brief statement, saying, “Our thoughts and prayers are with the victims.”

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2. Crusius Once Wrote on LinkedIn That He Was Not Motivated to Do Anything Other Than to Get By

Crusius wrote on his LinkedIn page in 2015 that he was not motivated to do anything other than enough to get by. Shortly after the shooting on August 3, that page was deleted. Crusius said on that page that he attended Plano High School. Plano is located near Crusius’ family home in Allen, Texas, and is about 650 miles away from El Paso. Collin County Community College confirmed he attended their school through the spring of 2019.

He wrote in the About section of the LinkedIn page, “I’m not really motivated to do anything more than what’s necessary to get by. Working in general sucks, but I guess a career in Software Development suits me well. I spend about 8 hours every day on the computer so that counts as technology experience I guess. Pretty much gonna see what technology careers present themselves; go with the wind.”

When writing about his life in high school, Crusius said that he did not participate in extracurricular activities because of “lack of freedom.” A Facebook page that shows the suspect’s face as the profile image shows no biographical information or recent postings. On that page, Crusius has three visible friends.

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3. A Manifesto Purporting to Be From the Shooter Has Been Circulating on 8Chan

Reporter Scott Stedman has tweeted that he had told the FBI that a manifesto which was purported to be from the suspect had been circulating on 8Chan. Stedman said that the FBI is treating the manifesto seriously. 8Chan is a controversial message board that has been described as “the home of the most vitriolic content on the internet” by Vox.

That manifesto, which has been seen by Heavy.com but not verified as belonging to the suspect, makes negative references to Hispanic immigration into the U.S.. It criticizes both major political parties in the U.S., but the writer stresses that he supports some in the Republican Party in terms of immigration policies. The writer also makes reference to alleged Christchurch mosque shooter, Brenton Tarrant.

Law enforcement confirmed they are reviewing the manifesto, but could not confirm whether it was written by the shooter.

The manifesto appears to have been posted before the first reports of the shooting. It includes details that match up with what happened at the El Paso Walmart.

The manifesto was titled “An Inconvenient Truth.”

It began:

“In general, I support the Christchurch shooter and his manifesto. This attack is a response to the Hispanic invasion of Texas. They are the instigators, not me. I am simply defending my country from cultural and ethnic replacement brought on by an invasion. Some people will think this statement is hypocritical because of the nearly complete ethnic and cultural destruction brought to the Native Americans by our European ancestors, but this just reinforces my point. The natives didn’t take the invasion of Europeans seriously, and now what’s left is just a shadow of what was. My motives for this attack are not at all personal. Actually the Hispanic community was not my target before I read The Great Replacement. This manifesto will cover the political and economic reasons behind the attack, my gear, my expectations of what response this will generate and my personal motivations and thoughts.”

It goes on to list “political reasons.”

“In short, America is rotting from the inside out, and peaceful means to stop this seem to be nearly impossible,” it said.

The manifesto said both Democrat and Republican politicians are failing because they are “either complacent or involved in one of the biggest betrayals of the American public in our history.” The “betrayal” is “the takeover of the United States government by unchecked corporations.”

“Due to the death of the baby boomers, the increasingly anti-immigrant rhetoric of the right and the ever increasing Hispanic population, America will soon become a one party-state. The Democrat party will own America and they know it,” it said.

It described Democrat policies of open borders, healthcare for undocumented immigrants and citizenship as a way to enact a coup by recruiting voters.

It lists “economic reasons” saying immigration will shrink the number of jobs available to American citizens.

“Even though new migrants do the dirty work, their kids typically don’t. They want to live the American Dream which is why they get college degrees and fill higher-paying skilled positions,” the manifesto said.

It goes on to address climate change, saying, “Everything I have seen and heard in my short life has led me to believe that the average American isn’t willing to change their lifestyle, even if the changes only cause a slight inconvenience. The government is unwilling to tackle these issues beyond empty promises since they are owned by corporations.”

It said reducing the number of people in the country is a way to help staunch the drain on natural resources.

“I just want to say that I love the people of this country, but g*d d*** most of y’all are just too stubborn to change your lifestyle. So the next logical step is to decrease the number of people in America using resources. If we can get rid of enough people, then our way of life can become more sustainable.”

It goes on to list gear including an AK47 or WASR 10, saying, “it overheats massively after about 100 shots fired in quick succession. I’ll have to use a heat-resistant glove to get around this.”

“I didn’t spend much time at all preparing for this attack. Maybe a month, probably less. I have do this before I lose my nerve. I figured that an under-prepared attack and a meh manifesto is better than no attack and no manifesto,” it said.

It goes on to denounce “race mixing” and said the job he wants will likely be automated. The writer expected to die, saying capture would be worse than death.

“America can only be destroyed from the inside-out. If our country falls, it will be the fault of traitors. This is why I see my actions as faultless. Because this isn’t an act of imperialism but an act of preservation,” it said.

The manifesto concluded with the writer saying his opinions predate Trump and his presidential campaign.