PHOENIX (February 1, 2013)—Mark Hummels, 43, the lawyer who was wounded an office shooting earlier this week in Phoenix, has died.

Hummels was 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, Arthur Douglas Harmon, 70 was found dead early Thursday in Mesa from a 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.

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