PORTLAND — A 41-year-old Biddeford man who allegedly used the Internet to stalk his ex-girlfriend even after she changed her name and moved from Maine to Louisiana has been indicted on federal cyberstalking and identity theft charges.

Shawn Sayer is accused of using email and the Internet to terrorize his ex-girlfriend for four years after they broke up in 2006. The woman told detectives that Sayer put her name and photos and videos that had been consensually recorded while she dated Sayer on Craigslist and pornographic websites inviting male strangers to her home for sex, according to an affidavit.

The woman legally changed her name and moved to Louisiana in 2009 to escape the harassment, but strange men continued to show up at her door in search of sexual favors even then, court records allege. She told police she feared for her safety and thought she would be raped.

Sayer was convicted of stalking in a state court in 2006 and last year pleaded guilty to separate state charges in a plea agreement that sent him to jail for 22 months. In that case, he was sentenced for violating bail conditions and violating a protection order.

If convicted of the federal charges, he faces up to 10 years in prison on the cyberstalking charge, five years on the identity theft charge and a $250,000 fine on each charge.

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