The man who went on a shooting spree at an El Paso, TX Walmart and killed at least 18 people with many more injuries has been reportedly identified and taken into custody by law enforcement.
The suspect is just-turned-21-year-old Patrick Crusius.
Take a look at this breaking news that hit Twitter:
Crusius opened fire at a local Texas Walmart.
Videos quickly surfaced on Twitter of the scene.
Here are a few of the videos of evacuations on the scene of the shooting circulating online:
NBC News has more details on the suspect:
A gunman opened fire Saturday in a Walmart and around a nearby shopping mall in El Paso, Texas, leaving 20 people dead and 26 injured, and prompting calls for urgent blood donations for the wounded, law enforcement officials said.
In delivering an updated number of deceased, Gov. Greg Abbott called it "one of the most deadly days in the history of Texas."
"Twenty innocent people from El Paso have lost their lives," he said.
One suspect was in custody, officials said. Law enforcement sources say police identified the suspect as Patrick Crusius, 21, from the Dallas area. Sgt. Robert Gomez of the El Paso Police Department said no shots were fired by law enforcement.
Multiple senior law enforcement officials believe Crusius posted a screed online just prior to the attack. They say investigators are examining a posting they suspect is from him but that they have not officially confirmed it.
The sources said it was too soon to draw any motives from the posting.
It appears the document, with no mention of the location of the attack, was posted on an extremist website at 10:12 a.m. Saturday, El Paso time, according to law enforcement sources. Police say the first 911 call alerting them to the shooting at the Walmart was made 27 minutes later ― not enough time to act.
Newsweek also had more details on the suspected shooter:
The El Paso Police Department late afternoon Saturday identified a shooter who killed at least 20 people and injured more than two dozen others at a Walmart earlier in the day as 21-year-old Patrick Crusius, according to several news outlets.
Authorities revealed the shooter's identity to The Washington Post and the Associated Press on the condition of anonymity.
Three sources, two in federal law enforcement and one in state government, told CNN that Crusius is from Allen, Texas, a suburb of Dallas. Law enforcement sources told NBC News that Crusius is from the Dallas area and that a second person was taken into custody but it was not immediately known if the person was involved in the mass shooting.
El Paso police spokesman Sgt. Robert Gomez in a press conference had said that a suspect in custody was a white man in his 20s.
Public records show that Crusius had a residence in Allen, which is about 650 miles away from El Paso. The records indicate that Crusius registered to vote in 2016 but does not reveal his party affiliation.
A Twitter account that appeared to possibly be that of Crusius liked an image of guns arranged to spell out "Trump." The account was taken down by Twitter after the shooting on Saturday.
When asked by reporters in a press conference late afternoon Saturday for the suspect's name, El Paso Police Chief Greg Allen said, "this person is still entitled to fair process," and, "we don't want to make any statements now" to impede the investigation.
Allen added that the suspect was arrested at the west side of the Walmart where shooting took place and that he surrendered to approaching officers. The specifics were still under investigation.
President Trump has weighed in on the horrible Saturday shooting and says that he is "working with state and local authorites, and law enforcement" and that the federal government had pledged "total support" to El Paso's governor.
Here's the president's tweet: