Nevada authorities say they're trying to determine whether a California man's anger over complications he suffered from a 2010 surgery prompted him to go on a shooting rampage at a urologist's office, killing one doctor and critically wounding another before committing suicide.
Reno detectives say they're working to obtain the medical records of 51-year-old Alan Oliver Frazier to learn more about his physical condition and mental health before the shooting.
Police Lt. William Rulla says Frazier made it clear in a suicide note he planned the attack at that specific physician's office.
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Investigators have refused to specify the kind of surgery Frazier had or say whether those doctors were involved with the operation.
A couple who lived across the street from Frazier said he frequently complained about pain he suffered from what he claimed was a botched vasectomy.