Phoenix police released a sketch of a man they say is linked to the Thursday night killing of Dr. Steven Pitt, a well-known forensic psychologist.

PHOENIX — A forensic psychiatrist who assisted in the investigations into the 1996 death of JonBenet Ramsey in Colorado and a string of killings in Phoenix more than a decade ago was fatally shot outside his Scottsdale office.

Police say witnesses heard a loud argument and gunfire Thursday outside the office of 59-year-old Dr. Steven Pitt.

Phoenix police spokesman Sgt. Vince Lewis says he had no information on whether the killing was connected to Pitt's work.

Investigators released a sketch of the suspect who fled the scene.

Pitt assisted in the investigation into the death of 6-year-old JonBenet Ramsey, who was found dead at her home in Boulder.

A decade later, Pitt helped Phoenix police in the Baseline Killer investigation as they sought a man who later convicted of killing nine people.


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