At least three other businesses in the area were also on lock down, including a Red Lobster franchise and a Hooter’s location.

One witness said he saw at least one person inside the store with a fatal head wound, and he saw shoppers in bloodied clothes.

Video posted on Twitter showed customers at one department store being evacuated with their hands up.

‘Hands in the air!’ an officer can be heard shouting in the footage.

‘We heard shots and saw smoke,’ said Victor Gamboa, 18, who works at the McDonald’s inside the Walmart store where the shooting took place.

‘I saw a man on the floor full of blood. He appeared to be dead. It happened very quickly.’

Gamboa said employees sheltered customers who huddled on the ground during the shooting rampage.

They were on the ground for some 15 minutes until officers arrived and led the survivors to a Sam’s Club across the street.

A family of three was one of a dozen waiting outside a local bus station, trying to get back to their car, in blocked-off Walmart parking lot.

‘I heard the shots but I thought they were hits, like roof construction,’ said Adriana Quezada, 39, who was in Walmart with in the women’s clothing section with her two children.

She said she saw four men, dressed in black, wearing shirts, moved together firing guns indiscriminately.

‘I saw four men, shooting everywhere,’ Quezada said.

‘I told my son, those are gunshots.’

Her daughter, 19, and son, 16, threw themselves on the ground, then ran out of the Walmart through an emergency exit.

They were unhurt.

Evan McMorris-Santoro, a reporter for the Vice news site, tweeted that he was at a town hall event for House Rep. Veronica Escobar when it was shut down due to the situation nearby.

Morris-Santoro clarified that the scene was ‘not close to us.’

Beto O’Rourke, the Democratic presidential candidate and former U.S. congressman who represented El Paso, tweeted: ‘Truly heartbreaking. Stay safe, El Paso.

‘Please follow all directions of emergency personnel as we continue to get more updates.’

After his tweet, O’Rourke said he was distraught by the news of the mass-shooting in his hometown.

An emotional O’Rourke told reporters on Saturday in Las Vegas that he had spoken by phone to El Paso Mayor Dee Margo, the city’s sheriff and U.S. Rep. Veronica Escobar.

He says they were still learning details about the attack at or near the Cielo Vista Mall, in which police say multiple people were killed and a suspect was taken into custody.

O’Rourke said he planned to return home immediately to be with his family.

He asked ‘for everyone’s strength for El Paso right now. Everyone’s resolve to make sure that this does not continue to happen in this country.’

O’Rourke’s successor, House Rep. Veronica Escobar, tweeted: ‘Utterly heartbroken by the developing news in El Paso.

‘Monitoring the situation and in communication with our law enforcement. Please stay safe.’

Texas Governor Greg Abbott tweeted: ‘In El Paso, the Texas Dept. of Public Safety is assisting local law enforcement & federal authorities to bring this tragedy to the swiftest & safest possible conclusion.

‘We thank all First Responders for their courageous response & urge all area residents to remain safe.’

The White House says President Trump has been briefed on the shooting and has spoken to Attorney General William Barr and Abbott.

Trump tweeted: ‘Terrible shootings in ElPaso, Texas. Reports are very bad, many killed. Working with State and Local authorities, and Law Enforcement.

‘Spoke to Governor to pledge total support of Federal Government. God be with you all!’

The Bureau of Alcohol, Tobacco, Firearms, and Explosives announced that it has dispatched federal agents to the scene to assist local law enforcement.

‘Please stay away from the area and refrain from posting first responder activity on social media,’ the ATF’s Dallas bureau tweeted on Saturday.

A family that was shopping near Walmart during the shooting sought cover in nearby Landry’s Seafood, hostess Sofia Cervantes told USA TODAY.

‘They are in shock right now,’ Cervantes said. ‘They were barely able to talk to us.’

An employee of a nearby Olive Garden told The New York Times that the restaurant has also been placed in lock down.

At least 10 people ran into the restaurant seeking cover, the employee said.

‘We don’t have any information, just that there’s an active shooter at the Walmart in the same parking lot as we are,’ the employee said.

‘We’re just on lock down right now.

‘The SWAT team just came in and told us that they had cleared the building and told us lock the doors.’

An assistant manager at a Men’s Wearhouse in the Cielo Vista Mall said at least 15 people came into the store when the shooting started.

Susana Franco said police officers, military and the SWAT team could be seen from her store’s front windows.

‘They’re not letting people in the parking lot,’ she said. ‘They’re trying to evacuate all of the mall.’

El Paso is located on the border separating the United States and Mexico

Heavily armed police are seen next to an FBI armored vehicle next to the Cielo Vista Mall in El Paso on Saturday

Heavily armed police are seen next to an FBI armored vehicle next to the Cielo Vista Mall in El Paso on Saturday

Police stand at attention during an active shooter at a Walmart in El Paso on Saturday

Police stand at attention during an active shooter at a Walmart in El Paso on Saturday

The Bureau of Alcohol, Tobacco, and Firearms dispatched agents to aid local law enforcement

A local police officer is seen directing passersby near the scene of the shooting in El Paso on Saturday

A local police officer is seen directing passersby near the scene of the shooting in El Paso on Saturday

Heavily armed police are seen outside the Walmart near the Cielo Vista Mall in El Paso on Saturday

Heavily armed police are seen outside the Walmart near the Cielo Vista Mall in El Paso on Saturday

Police said there were no more threats to the area after a suspect was apprehended

Police said there were no more threats to the area after a suspect was apprehended

Law enforcement officials are seen in front of a Hooters restaurant, which was placed on lock down during the shooting

Law enforcement officials are seen in front of a Hooters restaurant, which was placed on lock down during the shooting

A police officer armed with an assault rifle and wearing a bulletproof vest is seen at the scene of the shooting in El Paso on Saturday

A police officer armed with an assault rifle and wearing a bulletproof vest is seen at the scene of the shooting in El Paso on Saturday

A heavy police presence was observed on the roadways near the mall in El Paso

A heavy police presence was observed on the roadways near the mall in El Paso

The suspect was taken into custody alive after the shooting in El Paso on Saturday

A local police officer is seen near the Cielo Vista Mall in El Paso on Saturday

Walmart issued a statement on its Twitter account which read: ‘We’re in shock over the tragic events at Cielo Vista Mall in El Paso, where store 2201 & club 6502 are located.

‘We’re praying for the victims, the community & our associates, as well as the first responders.

‘We’re working closely with law enforcement & will update as appropriate.’

El Paso, which has about 680,000 residents, is in West Texas sits across the border from Juarez, Mexico.