Texas police report active shooter situation

Police in Texas reported an active shooter situation Saturday at a Walmart store in El Paso. They said on Twitter they had "multi reports" of multiple shooters in this commercial district of the city.

KTSM, a local NBC affiliate, said 18 people had been shot but did not say how bad the injuries were or if any were dead. It gave no source for this toll. A witness who gave her name as Vanessa said she had just pulled into the parking lot of the Walmart and "all of a sudden you heard what sounded like fireworks, really loud fireworks."

"You could hear the pops, one right after another and at that point, as I was turning, I saw a lady, seemed she was coming out of Walmart, headed to her car. She had her groceries in her cart and I saw her just fall," this witness told Fox News. It has been a particularly bad week for gun violence in the United States.

Two people died and a police officer was wounded Tuesday at a Walmart in Mississippi. Last Sunday a 19-year-old gunman opened fire at a food festival in northern California, killing three including two children.