Jodi Arias Trial Update: Prosecutor Questions Arias' Memory, Ability to Tell the Truth

Jodi Arias has been on the witness stand for several days and is no closer to telling the truth about what happened to Travis Alexander, according to prosecutor Juan Martinez. During her cross-examination, Arias often appeared aloof, confused, or gave terse answers.

When asked if she truly remembered what happened four years ago, when Alexander was killed, Arias replied that she did not. Martinez then asked about her frame of mind during the murder, and Arias replied that she was the only witness to the crime but could not attest to what her frame of mind was.

Arias said that God was the only one present who could support her claim that she didn't remember all that happened during the murder.

"God's not here. We can't subpoena him," Martinez said. "You truly believe that you didn't do anything wrong here?" Martinez then asked.

"I believe that I knew that I was not guilty of first-degree murder, and I did plan to be dead," Arias said. She attempted to divert the question by reasserting that she planned to commit suicide; Martinez, exasperated, told Arias that she had said that numerous times and wanted an answer to his direct question.

Martinez recounted the story of how Arias took several Advil pills and then attempted to cut her wrist but stopped because it "stung."

"You stopped cutting yourself because it 'stung.' Can you imagine how much it must have hurt Mr. Alexander when you stuck that knife into his chest?" Martinez asked.

Throughout the trial, Martinez has been adamant that Arias has lied the entire time, from the moment she killed Alexander to her latest time on the stand. He has accused her of lying to the jury, to herself, and to Alexander's family.

"Travis' family deserves to know what happened," Arias said in a 2008 interview with "48 Hours" that Martinez showed yesterday.

"They did deserve to know what happened, but did they deserve that lie?" Martinez asked.

"I guess not," Arias replied.

The trial continues today, with Martinez continuing his cross-examination of Arias. If convicted of first-degree murder, Arias could face the death penalty.