Earlier Tuesday, a medical expert for the prosecution testified that brain scans of Victorino and Hunter were normal and could not be used to support the diagnosis of mental illness. Dr. Lawrence Holder of Shands Jacksonville hospital also said the use of PET scans to diagnose mental illnesses is not an established clinical practice.

Killed in the August 2004 slayings were Belanger; Michelle Nathan, 19; Francisco Ayo-Roman, 30; Anthony Vega, 34; Roberto Gonzalez, 28, and Jonathan Gleason, 17. Most of the victims worked at Burger King in Deltona.

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