Investigation reveals Walmart employee shot and killed customer.

A Walmart employee in Florida has been charged with first-degree murder after fatally shooting a customer who tried to help a female employee during a fight with the gunman. The employee dropped his handgun during the altercation, and when the customer came to the woman's aid, the employee retrieved his gun and shot the man several times, killing him. The employee fled the store but was later arrested and is being held without bond. Walmart has suspended the employee and is taking steps to terminate his employment.