SANFORD, Fla. -

Sanford police arrested on Friday a man who they say was caught by Walmart employees placing a cellphone under a female shopper's skirt.

John Williams, was charged with sex offense video voyeurism after Walmart loss prevention employees said they saw Williams lunge low to the floor and place his phone under a woman's skirt twice in the Walmart on Rinehart Road, according to police.

The victim, who was shopping with her young daughter at the time, told police that she noticed Williams following her from aisle to aisle and was concerned that he wanted to steal her purse.

Police said they will search Williams' cell phone to determine if there are additional victims.