BANGOR — A Vermont man accused of submitting false invoices to a Maine town was convicted for fraud on Friday.

Craig Sanborn was convicted of one count of wire fraud in a jury trial in Bangor. He faces up to 20 years in prison and a $250,000 fine. A spokesman for the U.S. attorney’s office said Sanborn’s sentencing will likely happen in about three months.

Federal prosecutors say Sanborn, between November 2005 and January 2008, submitted $300,000 worth of false invoices to Brownville, Maine, officials for materials and services he never purchased in connection to an ammunition plant. The money came from a federal grant.

He was also convicted in October of two counts of negligent homicide and manslaughter in connection with an explosion at a Colebrook, N.H., gun powder plant that killed 49-year-old Jesse Kennett and 56-year-old Donald Kendall. Sanborn was later sentenced to 10 to 20 years in prison.