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Police confirm Nevada hospital gunman was urology patient, investigate chat room rants

This photo provided by the California Department of Motor Vehicles via the Reno Gazette-Journal and KXTV News 10 shows Alan Frazier. Frazier, who complained he had a botched 2010 surgery, left a suicide note outlining plans for his attack before targeting physicians in a deadly rampage at a medical office that left one doctor dead and another critically wounded, police said Thursday, Dec. 19, 2013. (AP Photo/California Department of Motor Vehicles via Reno Gazette-Journal and KXTV News 10) MANDATORY CREDIT

This photo provided by the California Department of Motor Vehicles via the Reno Gazette-Journal and KXTV News 10 shows Alan Frazier. Frazier, who complained he had a botched 2010 surgery, left a suicide note outlining plans for his attack before targeting physicians in a deadly rampage at a medical office that left one doctor dead and another critically wounded, police said Thursday, Dec. 19, 2013. (AP Photo/California Department of Motor Vehicles via Reno Gazette-Journal and KXTV News 10) MANDATORY CREDIT  (The Associated Press)

Police have confirmed the Northern California man who killed one doctor and shot another at a Nevada urologist's office was a patient at the facility.

City spokeswoman Sharon Spangler also confirmed Tuesday police are "actively looking into" Alan Frazier's involvement in an Internet chat room where he reportedly complained about complications from a 2010 vasectomy.

Police say the 51-year-old made it clear in a suicide note that he planned the attack and that his focus was on the physicians at Urology Nevada, on the third floor of a Reno medical building.

Spangler confirmed detectives are interviewing an ex-fiancee of Frazier's who told The Associated Press he took medication for depression when they were together in the mid-1990s. They're also talking to a neighbor who says Frazier told him the day of the shooting that he was leaving and not coming back.