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Phoenix shooter kills self, second victim 'will not survive'

Suspected Phoenix shooter Arthur Douglas Harmon was found dead Thursday in a Mesa shopping center parking lot from what appeared to be self-inflicted gun shot wounds, police confirmed.

Harmon shot three people at a Phoenix office complex Wednesday morning, police said.

Steven D. Singer, 48, the CEO of a Scottsdale call center, died after being shot in the attack.

Mark Hummels, 43, a partner at Phoenix law firm Osborn Maledon who was injured in the shooting, is not expected to survive, the firm announced Thursday.

The third gunshot victim, Nichole Hampton, 32, is recovering in the hospital.

Police said that Harmon's body was found near Loop 202 and Dobson Road along the Logan Roadhouse restaurant by a landscaper. Officers then located Harmon's white Kia nearby.

Gunfire broke out near a mortgage company on 16th Street north of Glendale Avenue, around 10:30 a.m. Wednesday. Three wounded people were taken to an area hospital, one with life-threatening injuries, said Sgt. Tommy Thompson of the Phoenix Police Department.

Hummels, was shot in the head and neck and underwent surgery, according to an email sent out Wednesday by a colleague in the Phoenix law firm Osborn Maledon.

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Hummels represented Singer's firm, Fusion Contact Centers, in a suit filed by Harmon in 2012 over a contract in which the shooting suspect was to refinish call center furniture.

According to court records, Harmon was advanced $29,000 in a deal that he later alleged was a "scam."

An arbitration hearing was scheduled in the case Wednesday morning.

Police said that Harmon became involved in an argument with Singer and Hummels outside the office after the meeting. He shot them both, and Hampton, who was a bystander, Thompson said.

Officers cordoned off Harmon's home near 28th Street and Greenway Road — about seven miles from the shooting scene — until they obtained a search warrant Wednesday afternoon. A search of his home took just minutes in the afternoon.

A neighbor of Harmon's said an officer told her that the Kia was rented, and that his burgundy or brown Bronco or Blazer was missing.

"I don't know what he had to be upset about," said neighbor Tina Rooker on Wednesday, describing Harmon as "grumpy" and "not a people person." He was the neighborhood mechanic, she said, and liked to drink beer in his front yard.

"He's not somebody you say hi to when you go by; you don't get the same response," she said.

Rooker's husband, Stewart, said "I just know him as the race car guy."

Early reports from the scene indicated that up to five people had been shot. Medical workers took two other people from the scene who were being treated for stress, Thompson said.

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Osborn Maledon

Mark P. Hummels

Statement issued by Osborn Maledon

Our friend and partner, Mark Hummels, was severely injured in yesterday's senseless shooting. We have been informed that Mark will not survive from the shooting.

We are devastated at this news about our beloved friend. Our deepest sympathy and support pour out to his wife, Dana, and their two children. The trust and affection Mark inspired in every reach of our law firm and with his clients are a lasting testament we will always cherish.

We are sad beyond measure also to have lost our long-time friend and client, Steven D. Singer, the CEO of Fusion Contact Centers, in this tragedy. Steve was a long-time client of the firm and an accomplished entrepreneur. Our thoughts and prayers are with Steve's family as well.

Mark Hummels is the best kind of lawyer - a man who is highly capable in his practice and caring to his core about his community. Still in the early years of his career, Mark has earned many accolades for his skill as an attorney. He is president of the Phoenix Chapter of the Federal Bar Association and highly regarded by the State and Federal bench. He was recognized by "Benchmark Litigation" as a "future star" in litigation. To judges, attorneys and other professionals, he is a trusted counselor in ethics and disciplinary proceedings.

Mark also has given back to the community at large, serving on the training committee for Arizona Town Hall and providing pro bono legal services to those who could not afford counsel. This giving spirit was enhanced during his early years as a reporter for the "Santa Fe New Mexican," an experience that honed his rare insights into people and our society.

Above all, Mark is the most decent of men. An adoring husband, dedicated father and true friend, Mark is what all of us aspire to be on our best days.

As has been reported, both Mark and Steve were engaged in a settlement conference before they were shot.

The loss of Mark and Steve in any circumstances would be a tragedy. For this to happen to them, while participating in a mediation, is beyond understanding, a terrible loss for us all.