Helena, MT -

A federal judge has sentenced three people for their roles in luring investors to sink money in oil and gas projects that didn't exist in eastern Montana's Bakken oil patch.

U.S. District Judge Sam Haddon sentenced Suzette Gal on Monday to 10 years in prison after a jury found her guilty of conspiracy to commit fraud, investment fraud by mail and investment fraud by wire.

Co-defendant Steven Carpenter was sentenced to 15 1/2 years while Andras Gal was sentenced to six years on the three counts.

The three also were ordered to pay $675,406 in restitution.

Authorities say the fictitious energy projects promoted by Gal, her husband Mike Campa, and the others, promised investors lucrative returns.

Campa previously pleaded guilty to the charges but is seeking to withdraw his plea.