The state Supreme Court has for the third time upheld the death sentence for Ohio's only condemned female killer.

The court ruled 6-1 Tuesday in the case of Donna Roberts, sentenced to death for a third time in 2014.

In the past, the court said a prosecutor improperly helped prepare a sentencing motion in Roberts' case and that a judge hadn't fully considered factors that could argue against a death sentence.

Justice Terrence O'Donnell, writing for the majority, rejected arguments that allowing a new judge to sentence Roberts after the original judge died was unconstitutional.

The 73-year-old Roberts was accused of planning her ex-husband's murder with a boyfriend in hopes of collecting insurance money.

The boyfriend, Nathaniel Jackson, also was sentenced to death in the 2001 slaying.