PORTLAND — A federal jury found a Hebron man guilty of being a felon in possession of firearms at his retrial this week, two months after the first trial ended in a hung jury.

A jury convicted Dario Giambro, 75, on the felony charge after a two-day trial that ended Wednesday.

A judge declared a mistrial in August after a jury had failed to reach consensus on a verdict.

Giambro faces up to 10 years in prison and a fine of up to $250,000, and up to three years of supervised release.

Giambro had been prohibited from having guns stemming from a 2007 federal conviction for having an unregistered firearm among the more than 200 guns in his possession when he lived in Auburn.

During his trial this week, jurors learned that in January 2022, state police troopers executed search warrants at his mobile home at 692 Paris Road. Investigators discovered hundreds of firearms, including shotguns, rifles, pistols and revolvers, Some were leaning against walls and lying on a bed. Some were in boxes, some in cases and crates.

Investigators also recovered a large amount of ammunition.

Giambro was prohibited from possessing firearms due to a prior federal conviction in the District of Maine for possessing an unregistered firearm, which is a felony.

In September 2007, Giambro was convicted by a jury in federal court on a charge that he was in possession of weapon in violation of the National Firearms Act.

Giambro’s home had been searched after a shooting there Feb. 10, 2006.

No sentencing date has been set for his latest conviction.