Killer signed plot letters in his blood

Atlanta: A man charged with killing four people in a courthouse rampage used his own blood to sign letters that detailed his plot to escape with another inmate from a county jail, prosecutors said.

Tuesday's disclosure was made in a court filing in which prosecutors asked a judge to allow the other inmate's testimony. Prosecutors said there is no evidence that Steven Marshall is not telling the truth about his conversations with accused gunman Brian Nichols.

"Nor is it conceivable that Marshall devised a plot to entrap defendant into writing letters detailing his proposed escape, gathering items such as a contraband cell phone to assist in the scheme, and signing the letters in his own blood," the prosecutors wrote.