MADISON, WI (WTAQ) - A Marshfield man has been sentenced to seven-and-a-half years in a federal prison, for possessing child pornography.

Federal Judge William Conley of Madison also ordered 49-year-old Bryan Erbst to be under supervision for the rest of his life, after he leaves prison.

Authorities said an undercover officer downloaded videos from a file-sharing computer program that Erbst was using back in February of last year.

He surrendered the computer equipment – and he was told to pay $4,000 in restitution to his underage victims.