PHOENIX (CN) - The attorney who was shot in Phoenix while representing a client died late Thursday after he was taken off life support.
Mark Hummels, of Osborn Maledon, was representing the CEO of a call center at a mediation hearing Wednesday when the opponent in the hearing, Arthur Harmon, shot both men and a third person.
Hummels' client, Steve Singer, 48, CEO of Fusion Contact Centers, died Wednesday.
Hummels, who was shot in the neck and back, was declared brain dead and taken off life support Thursday night, according to wire reports.
"This is a day of just unspeakable sorrow for all of us who were close to Mark," U.S. Circuit Judge Andrew Hurwitz said Thursday outside the Sandra Day O'Connor U.S. Courthouse.
Hurwitz was an Arizona Supreme Court Justice in 2004 when Hummels, 43, clerked for him.
"Everybody that I knew in the state of Arizona told me I must hire him immediately because he was the smartest guy they ever met," Hurwitz said.
Wounded in the shooting was Nichole Hampton, 32, a human resources director. She was shot in the hand outside of the office building.
"I saw about four men in suits run toward the door frantically. One of them said, 'He's got a gun,' and then I heard shots," Hampton said at a Thursday press conference.
Harmon, 70, was found dead Thursday, apparently of a self-inflicted gunshot wound, at a shopping center in Mesa, according to Phoenix police.
Harmon had filed a pro se lawsuit against Singer's company in April 2012, claiming Fusion Contact Centers failed to pay him in full to refurbish and move office furniture. Harmon claimed the work could not be completed because the furniture could not be refurbished.
Osborn Maledon called Hummels "the best kind of lawyer - a man who is highly capable in his practice and caring to his core about his community."
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."
The law firm described Singer as "our longtime friend and client."
Click here for details of the legal dispute between Harmon and Fusion.