Psychiatrist Steven Pitt is dead after being shot outside his office in Phoenix, Arizona.
Pitt is most known for working on the JonBenet Ramsey case.
According to TMZ, the victim passed away after injuries sustained during the shooting.
Police are still searching for the suspect.
At this time, it is not known if the victim and suspect knew each other or if this was a random attack of violence.
People near where the shooting occurred said they heard some sort of argument before hearing gunfire.
Pitt theorized that the pineapple JonBenet Ramsey ate in the hours leading up to her death may have caused a fight between her and her brother, Burke.
While her family insisted JonBenet did not eat pineapple that night, evidence contradicted their claims. Pitt believed the finding pointed towards a family cover up.
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