A man shot during a fight inside a Walmart store in Phoenix, Arizona died later at a hospital, according to police in the Phoenix suburb of Chandler.
Surveillance video showed that a fight broke out between two people in the store Sunday which ended in a shooting around 4pm leading to the death of one of the men.
The shooter stayed at the store for a short time before he fled the scene, Chandler police spokesman Joseph Favazzo told the Associated Press.
A family member of the shooter called the police to provide information about the whereabouts of the suspect.
A scientific study published by the American Journal of Medicine in September found that the rate of gun violence is positively correlated with gun ownership rates.
A recent poll found that an estimated 40 percent of households in the United States have at least one gun owner.
Critics blame the notoriously liberal gun control laws in the US for the high rate of gun violence in the country.