An incident involving pepper spray used at a Walmart in Kinston during Black Friday is under investigation.

Authorities say the off-duty officer was hired by the store to help with security and was trying to subdue a disturbance and make an arrest when he used his pepper spray.

A customer told WITN people were standing in line waiting for cell phones when a man fell onto a display. She says security thought there was a fight. The customer says about 20 people, including children, were affected by the pepper spray.

No further details were made available by police.