Arias’ grandparents reported a .25 caliber handgun stolen from their Northern California house about a week before the killing — the same caliber used to shoot Alexander — but Arias claims to know nothing about the robbery. She says she brought no weapons to Alexander’s home on the day she killed him.
Prosecutors must prove she planned the attack in advance to secure a first-degree murder conviction and a chance for a death sentence.
Of the day she killed Alexander, Arias says she only remembers shooting at him, putting a knife in the dishwasher and disposing of the gun in the desert as she drove from Arizona on her way to Utah. And she immediately began planning an alibi ‘‘to ‘‘throw the scent off for a little while.’’