At a Desoto, Texas Walmart, one person was injured when a concealed weapon carried by another Walmart customer accidentally discharged. The victim was treated at the hospital for injuries that were not considered life-threatening. 

According to police, the person whose weapon fired left the premises before they arrived.  When they tracked down the shooter, they concluded that he did not have a license to carry a handgun.

Source:

“1 Injured After Gun Goes Off Inside DeSoto Walmart,” 11/21 CBS DFW (May 18, 2021).