A mayor’s aide and police say multiple people were killed in an attack at an El Paso, Texas, shopping complex.

Police said they were responding to at least one active shooter in El Paso on Saturday and told the public to avoid the area of the Cielo Vista Mall.

“We have multi reports of multiple shooters … police conducting search of a very large area,” the department wrote on 
Twitter.

Tactical units were focusing on the Walmart in the mall, and the store’s manager says they have surveillance tape to send to police. The parking lot of the Walmart has been secured and a command post has been set up nearby.

Multiple federal agencies, including the FBI and Homeland Security, are also on scene and police have also been escorting out individuals hiding in several other stores. 

Video posted on Twitter appeared to show one department store being evacuated with customers holding their hands in the air:

Local media reports that several people have been shot and injured. One witness said he saw at least one person inside the store with a fatal head wound, and he saw shoppers in bloodied clothes.

The Mayor of El Paso Dee Margo has told CNN that there have been multiple fatalities. 

Texas governor Greg Abbott tweeted that federal agencies are working with local authorities to respond to the situation.

“Scene is still active,” the El Paso Police Department wrote on Twitter. Few other details were immediately available. Cielo Vista Mall is in the east of the city.