An armed man with riffle opened fire at a Walmart store in El Paso, Texas, on Saturday, killing 20 people and wounding 26 others before he surrendered to police at the scene.
Many shoppers in the busy store were caught up in the latest mass shooting to rock the United States, just six days after a teenage gunman killed three people at a summer food festival in Northern California.
Authorities identified the gunman as a 21-year-old white male from Allen, Texas.
Citing law enforcement officials, multiple news media reports named the suspect as Patrick Crusius.
El Paso police chief Greg Allen said authorities were examining a manifesto from the suspect indicating a potential hate crime, adding that the investigation was continuing.
According to Reuters, a four-page statement posted on 8chan, an online message board often used by extremists, and believed to have been authored by the suspect, called the Walmart attack "a response to the Hispanic invasion of Texas."
CNN reported that the FBI has opened a domestic terror investigation into the Texas shooting.
An eyewitness told Reuters: "People were panicking and running," Long said. "They were running close to the floor, people were dropping on the floor."
Mexico’s authorities announced three Mexican nationals were among the dead, and six others were among the wounded.
Video footage from the scene showed victims lying on the ground inside and outside the store. One shopper told Reuters the gunshots sounded like they began outside the building.
[caption id="attachment_69808" align="aligncenter" width="414"] Photo circulated for the suspect[/caption]
The suspect surrendered to police, who responded to the shooting within six minutes, as officers closed in on him, and he was taken into custody without incident, authorities said. Video posted on social media appeared to show him being handcuffed by police and placed in a squad car.
On Twitter, U.S. President Donald Trump branded the shooting "an act of cowardice," adding, "I know that I stand with everyone in this Country to condemn today's hateful act. There are no reasons or excuses that will ever justify killing innocent people."