Police have charged a 19-year-old Pennsylvania man in a scary school bus prank involving a "Scream" mask and a fake knife.
Police in Upper Macungie Township said Jason Santo boarded the Parkland High School bus early Tuesday wearing a black cloak, the mask and carrying the fake knife. He screamed then ran away.
Police said someone followed the school bus intruder to Santo's home and alerted authorities.
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Police said Santo acknowledged pulling the prank, saying he is friends with a student on the bus and was trying to scare him.
Police have cited him with disorderly conduct and unauthorized school bus entry.
The Associated Press could not immediately located a phone number for Santo.