The Michigan appeals court says it won't review the prison sentence of former Detroit Mayor Kwame Kilpatrick, who's in prison for violating probation in a criminal case.

The decision means Kilpatrick will remain in prison at least until next summer unless another court intervenes. He was sentenced to 14 months to five years for failing to report assets and turn over more money to reduce his $1 million restitution to Detroit.

The restitution was a consequence of his 2008 guilty plea to obstruction of justice. Kilpatrick had lied at a civil trial to conceal an affair with his chief of staff, a relationship later revealed through sexually explicit text messages.

Kilpatrick attorney Arnold Reed says he's not surprised by the appeals court's rejection and may take the case to federal court.