Jodi Arias looks at her family during the penalty phase of her murder trial at Maricopa County Superior Court in Phoenix, Ariz., in this file photo.PHOENIX - Jurors have deadlocked on a verdict of life or death for Jodi Arias in the 2008 killing of her one-time boyfriend.
The judge declared a mistrial in the penalty phase. Another panel will be seated and the sentencing process will begin anew in July.
The jury found Arias guilty of first-degree murder May 8 and later determined the killing was cruel enough to merit consideration of the death penalty.
Arias earlier pleaded with jurors to spare her life. She said she "lacked perspective" when she told a reporter after her conviction that she preferred execution to spending the rest of her days in prison.
Arias says she killed Travis Alexander in self-defense. Prosecutors contend she did it in a jealous rage.