Updated

Jodi Arias' second penalty phase trial has been scheduled to begin in September.

The 33-year-old former waitress was convicted of first-degree murder in May for the June 2008 killing of her one-time boyfriend in Arizona, but jurors couldn't reach a decision on a sentence.

A judge on Monday set the new trial date with jury selection beginning Sept. 8.

Under Arizona law, while her murder conviction stands, prosecutors have the option of putting on a second penalty phase with a new jury in an effort to secure a death sentence.

If the second panel fails to reach a unanimous decision, the death penalty will be removed from consideration. The judge then would sentence Arias to spend her entire life behind bars or to be eligible for release after 25 years.