BOISE, Idaho -

Prosecutors in a federal bankruptcy fraud trial say a former Idaho prosecutor hid his then-wife's Rolex watch when the couple filed for bankruptcy in late 2010.

But John Bujak in opening statements Tuesday says his former wife told him that she'd given the watch to her mother years earlier, and that's why he didn't include it when filing bankruptcy papers.

The former Canyon County prosecutor is charged with bankruptcy fraud, concealment of assets, making a false statement under oath, money laundering and obstruction of justice.

The Idaho Statesman reports that the trial is expected to last about a week at the federal courthouse in Boise.

The charges against Bujak carry penalties of five to 10 years each.