Police say one man has been arrested. Authorities are also seeking at least one woman in the Friday afternoon shooting that followed a fight with a security guard inside the business.
The shooting was reported shortly after 3:30 p.m.
Deputy Police Chief Rodney Johnson said the woman being sought became upset when her tax refund wasn't ready yet.
Johnson says the woman scuffled with the guard. The man with her pulled a gun and started shooting.
The security guard was wounded, as were three other employees in the office.
One victim was in critical condition, while the other three were listed in serious condition.