(CNN) -- Former Detroit Mayor Kwame Kilpatrick has been sentenced to a maximum of five years behind bars for violating probation.
Wayne County, Michigan, Judge David Groner issued the order Tuesday after Kilpatrick was found guilty in April of violating his probation by failing to report assets that could be used to pay restitution.
He said Kilpatrick must serve a minimum of a year and a half, minus 120 days credit for time served.
Kilpatrick pleaded guilty in September 2008 to two felony counts of obstruction of justice stemming from his efforts to cover up an extramarital affair. He also pleaded no contest to charges of assaulting a police officer attempting to serve a subpoena on a Kilpatrick friend in that case.
He was accused of blocking a criminal investigation into his office and firing a police deputy to cover up the affair.
He served more than three months in jail and was released on five years of probation in February 2009. He was ordered to pay $1 million in restitution as part of his original plea deal.
On April 20, Groner ruled that Kilpatrick had violated probation by failing to turn over his tax return. The judge noted that Kilpatrick had just made a payment of $3,000 on his restitution bill.
"That's $3,000 more for the city of Detroit, and I bet he makes another $3,000 payment next month," Groner said then.
"Let's get the money if we can. If I put him in jail, it's your tax dollars, Wayne County, and if he's in jail, the county doesn't get that money."
Kilpatrick still needs to pay $860,000 in restitution as a condition of parole.