A Fairfield lawyer was sentenced Tuesday to three months in federal prison and one year of supervised release for falsifying tax returns.

John Blank, 62, pleaded guilty in December to one count of making and subscribing a false tax return when he underreported his 2006 tax year by $597,000, the U.S. Attorney's office said in a release.

After his release from federal prison, Blank must spend six months in home confinement followed by another six months under supervision, U.S. District Judge Robert Chatigny ruled at federal court in Hartford.

Blank, who also admitted to underreporting his 2005 tax year income, must pay back $470,868.12, which includes back taxes for the tax years 2005 and 2006, interest and penalties.