Muhammad and his accomplice, Lee Boyd Malvo, then 17, taunted police with written messages, phone threats and demands during the rampage.

CNN: L.A. manhunt reminiscent of D.C. sniper case

During the trial, prosecutors argued Muhammad was the mastermind of the sniper attacks, while accomplice Lee Boyd Malvo fired the fatal shots.

CNN: Victims' families?cheer sniper death sentence

They argued that the judge in neighboring Fairfax County had ordered prosecutors there to turn the document over to attorneys for Muhammad's co-defendant, Lee Boyd Malvo.

CNN: Prosecutors to review sniper case statements