Police have not said who the suspect was or why they think he committed the killings, other than that he was an adult male.
"If there is anything positive that can come out of these atrocities, it is the speed and tenacity with which your law enforcement joined together to bring justice to our communities", Phoenix Police Chief Jeri Williams said.
The suspect believed to be behind the Arizona killing spree has died from a self inflicted gunshot wound following a police standoff at a motel in Scottsdale Monday.
The string of shootings raised questions about whether Pitt may have been killed because of his profession, a line of work that required him to study the minds of criminals, and whether the four killings were related.
Jones was a suspect in the killings of six people, one of which was Steven Pitt, the forensic investigator in the murder of JonBenét Ramsey.
Officers surrounded a hotel Monday morning in Scottsdale, where they'd tracked down the bald man depicted in a police sketch. He was found shot dead in Phoenix on May 31 after witnesses heard a loud argument and gunshots, officials said. Ben Hoster, would not disclose what connected the first three victims, saying that was part of the investigation.
Court records show his wife filed for divorce in 2009.
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The previous week the USA had withdrawn an invitation for Beijing to participate in the exercise known as Rim of the Pacific. Taiwan and China, which are hundreds of miles to the north, also claim some of the islands.
A suspect who may be linked to a series of shootings in Scottsdale and Phoenix, Arizona, is now surrounded by police, according to Scottsdale Police Sgt.
The suspect was also believed to be seeing a therapist at the same location where the fourth victim, Marshall Levine, was found shot dead on Saturday night.
A fourth homicide victim was found Saturday. Karen Kolbe, a licensed professional counselor, told The Arizona Republic that Levine was a psychologist to whom she had rented office space for the last two years.
On Friday, two paralegals, Veleria Sharp and Laura Anderson, were shot and killed inside the law office where they worked.
A partner at the family law firm, Elizabeth Feldman, is listed as the lawyer who represented Connie Jones in her divorce from Dwight Lamon Jones.
Kolbe said police arrived at her house in the early hours of Saturday morning with the news that Levine had been killed. Police followed the woman's blood trail and found the second victim, Hoster said.
Pitt also consulted on cases including the Columbine High School massacre, Kobe Bryant's sexual assault case and the Phoenix serial killer known as the "Baseline Killer", who was sentenced to death for murdering nine people in 2005 and 2006. The murder of the 6-year-old beauty pageant competitor, found dead in the basement of her family's Boulder, Colorado, home has never been solved.