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The newly filed paperwork seeking the death penalty against Bilotta said prosecutors believe that Bilotta alone stabbed Barnes, while McClurg "abandoned the plan and did not participate."
McClurg is charged with conspiracy to commit capital murder, tampering with evidence and accessory after the fact to first-degree murder.
Prosecutors said the murder was "especially heinous, atrocious, or cruel," and that it was "committed in a cold, calculated and premeditated manner," according to the notice that seeks the death penalty for Bilotta.
In January, the Seminole County Sheriff's Office said it was asking Facebook to provide access to Instagram Direct messages sent between Bilotta, McClurg and Barnes.
Bilotta and McClurg remain in the Seminole County Jail. The next time they are scheduled to appear in court is March 6.