The incident occurred in the store located in the 1200 block of South Sanderson Avenue.
Police say they initially responded to a report of a male suspect masturbating inside the store. The suspect, later identified as Grant Pittman, 22, of Winchester, had already left when officers arrived.
Witnesses provided police with a description of the suspect. A short time later, dispatch began receiving calls that Pittman was walking through the parking lot and blocking traffic into the street.
The suspect then allegedly returned to the department store where he grabbed a teenage girl. The girl was able to get away. An alert bystander detained Pittman until Hemet police officers arrived and took him into custody.
Pittman was charged with sexual battery, indecent exposure and annoying or molesting someone less than 18 years of age. He is being held on $25,000 bail.