A Twin Cities contractor who just started serving a prison sentence in a Scott County fraud case has been indicted by federal prosectors on charges of falsifying documents that helped him obtain contracts worth millions.

U.S. Attorney Andrew Luger said Tuesday that his office indicted Gerard Roy, 53, of Prior Lake, on 13 charges including fraud, money laundering and concealment of bankruptcy assets.

A Scott County judge sentenced Roy last week to a year in prison followed by six months of supervised release after he pleaded guilty to two counts of fraud in July. He was charged with forging construction bonds that his criminal history would have otherwise made him ineligible to receive.