A jury is once again considering the fate of convicted murderer Jodi Arias, The Associated Press reported.

In the retrial of her sentencing, the case went to the jury Wednesday in Arizona, the AP said. Jurors must decide if Arias will be sentenced to life in prison or death for killing her boyfriend.

A defense lawyer made his final plea for mercy in the killing that grabbed global attention over the violent nature of the crime.

The 2013 trial of Arias was broadcast live and became a sensation with its revelations that Arias had shot and slit the throat of her on-again-off-again boyfriend, Travis Alexander.

Arias, now 34, was convicted in 2013 of killing Alexander. However, the jury deadlocked on her punishment, prompting the penalty retrial, the wire service said.

A death penalty requires a unanimous vote by 12 jurors if Arias is to die by lethal injection, said Jerry Cobb, spokesman for the Maricopa County Attorney's Office.

During the retrial, if all 12 jurors can't vote for death, then Arias will be eligible for one of two life sentences: life without the possibility of release or life with the possibility of release after 25 calendar years, Cobb said.

That means Arias and her legal team will need to persuade only one of the 12 jurors to vote against the death penalty for her to be spared from execution, Cobb said.

The 2013 trial was sensational, attracting a media circus and a national audience riveted by themes of sex, violence and 18 days of testimony by Arias, who detailed what she called an abusive relationship with Alexander but claimed she remembered nothing of his killing.