Bridgewater College English professor Sean Dunn has been arrested on three charges, all relating to electronic child pornography. Investigators say Dunn was in an online relationship with a 17-year old girl in Bedford. She was the one who told the sheriff's office about their affair. The officers, with the assistance of the Rockingham Sheriff's Office, went to Dunn's home and office at Bridgewater College. Officers say they found photos of child pornography. No word on how many children may have been involved. Dunn was released last Thursday on bail.