Twenty people have been killed and 26 injured in a mass shooting at a Walmart store in the Texas city of El Paso.

Governor Greg Abbott described it as “one of the most deadly days in the history of Texas”.

Police are investigating whether the attack, which happened a few miles from the US-Mexico border, was a hate crime.

A 21-year-old man is in custody. Police said the suspect lived in Allen, Dallas, about 650 miles (1,046km) east of El Paso.

Mexican Foreign Minister Marcelo Ebrard says Mexico will take legal action to protect Mexicans and Americans of Mexican descent after the mass shooting in El Paso.

In a video statement, Ebrard called the shooting an “act of barbarism” and said the country’s first priority is attending to the impacted families.

“The president has instructed me to ensure that Mexico’s indignation translates into … efficient, prompt, expeditious and forceful legal actions for Mexico to take a role and demand that conditions are established that protect … Mexicans in the United States,” Ebrard said in a video posted on Twitter.

Of the 26 injured in the attack, at least nine were Mexican nationals, according to the government.

Video below:

Just what we need Mexico suing us.