Derry Township, PA -- A Derry Township man is facing charges by the Pennsylvania State Police for allegedly attempting to contact several underage teen girls. 

Wilmer Olson, 21, is accused of attempting to make contact with at least four underage girls when he was 19 years old, according to police. 

The four victims range in age from 12 to 15 years old. 

One victim told state troopers that Olson offered to buy her a soda in exchange for a sexual favor. 

Some of the victims told state police that they met Olson at either the Latrobe Skating Rink or Latrobe Memorial Pool. 

While Olson was 19 at the time of the alleged incidents, the victims told investigators he told them he was 16 years old. 

Two victims relayed to police that Olson was following them around the pool and skating rink and would not leave them along, despite being told to do so. 

The victims said they hid in the bathrooms in an effort to get away from Olson. 

Olson is facing charges of involuntary deviate sexual intercourse with a person less than 16 years, corruption of minors, unlawful contact with a minor, stalking, and harassment. 

Disclaimer: To the extent that pending criminal matters are discussed, all such charges are merely accusations and all defendants are presumed innocent until and unless proven guilty.