Police are searching for a gunman after a Walmart employee was shot during an apparent dispute between two men at a store in Darby Township, Pennsylvania. The employee was described by police as an innocent bystander, making the incident significant because gunfire broke out in a busy public retail setting.

Officers were called to the Walmart on McDade Boulevard in Delaware County shortly after 7pm on Friday following reports of gunfire. Police Chief Michael Sousa said the two men had argued verbally near the self-checkout area before one allegedly produced a handgun; the article does not state the employee’s condition or whether an arrest has been made.