At least one gunman has opened fire at a Walmart store near Cielo Vista Mall in El Paso, Texas, causing an unknown number of casualties, local officials and witnesses say.
Police responded to reports of a shooting at a Walmart near Cielo Vista Mall in El Paso on Saturday.
'We have multiple reports of multiple shooters.
Police confirmed on Twitter they are searching for "multiple shooters" in the area which is now on lockdown.
The El Paso Police Department has warned civilians that police will be conducting search on a very large area of the city.
First responders rushed to the scene, and customers were escorted out of the shopping center with their hands in the air, ABC affiliate KVIA reported.
Last week a former Walmart employee shot two co-workers and wounded a police officer before he was shot and arrested in Southaven, Mississippi.
"Utterly heartbroken by the developing news in El Paso".
Police didn't immediately provide details on whether anyone was hurt or in custody.
The Bureau of Alcohol, Tobacco, Firearms, and Explosives announced that it has dispatched federal agents to the scene to assist local law enforcement. "Stay away from the area and remain indoors", El Paso County 911 said in an alert to residents.
This is a breaking news story and is constantly being updated. "More information will be provided as it becomes available".