PHOENIX (AP) -- A lawyer wounded in this week's Phoenix office shooting has died.

Mark Hummels had been on life support at a Phoenix hospital after Wednesday morning's shooting that killed a Scottsdale-based company's CEO.

His law firm's publicist, Athia Hardt, says Hummels died Thursday night.

Police say the gunman -- 70-year-old Arthur Douglas Harmon -- was found dead early Thursday in Mesa from an apparent self-inflicted gunshot wound.

They say Harmon opened fire at the end of a mediation session over a lawsuit he filed last April.

A woman also was shot, but her injuries were not life-threatening.

The 43-year-old Hummels worked with the law firm Osborn Maledon and focused on business disputes, real estate litigation and malpractice defense.