Evan Castle picked the wrong place to grope a woman’s butt.
Since the 24-year-old is accused of committing the crime aboard an airline flight, the incident is being investigated by the FBI, a U.S. Attorney and federal special agents, Fox 31 Denver reports .
According to Fox 31, Castle was sexually harassing two flight attendants before he grabbed their butts.
Castle was advised Monday in U.S. District Court in Denver that he faces a charge of abusive sexual contact.
If charged and convicted, Castle faces up to two years in federal prison and a $250,000 fine.