Police link string of murders in Arizona

There are fears in Arizona that a serial killer is on the loose after police in Phoenix and Scottsdale, Arizona, believe they have linked the murders of a psychiatrist and two paralegals. Officials are now investigating a fourth murder that may be connect
by TODAY / / Source: TODAY

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There are fears in Arizona that a serial killer is on the loose after police in Phoenix and Scottsdale, Arizona, believe they have linked the murders of a psychiatrist and two paralegals. Officials are now investigating a fourth murder that may be connected. NBC's Steve Patterson reports for Sunday TODAY.

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