Hostages inside the store are safe, officials say
A gunman is believed to have been shot dead by police after barricading himself in a Walmart store with at least one hostage.
Officers were sent to the scene in Amarillo, Texas after a reported shooting.
A number of people were evacuated from the store.
A SWAT team then went into the building searching for the suspect and opened fire on him.
Nobody else is believed to have been injured or killed in the incident, which is thought to be workplace-related.
In a statement, the City of Amarillo said: "Suspect has been shot by APD SWAT and is apparently dead. Hostages inside are safe."
Police earlier said they had secured the outer perimeter of the store.
At least one gunshot was fired by the shooter, an eyewitness was reported as saying.
A statement from the city of Amarillo had said emergency officials were "on the scene of an active shooter incident" at the store.