By CNN Staff
updated 10:31 PM EST, Wed January 30, 2013
STORY HIGHLIGHTS
- One of three shooting victims dies of injuries, Phoenix police say
- Other two victims have non-life-threatening injuries, police say
- Police identify suspect as Arthur Douglas Harmon, 70, last seen in a white Kia
Phoenix, Arizona (CNN) -- Phoenix police were searching Wednesday for a 70-year-old man suspected in the shooting of three people, one of whom died, in an office building.
Arthur Douglas Harmon had gone to the building to discuss "some type of litigation," Phoenix Police Public Information Officer Tommy Thompson told CNN affiliate KTVK.
After the meeting, at about 10:30 a.m. (12:30 p.m. ET), Harmon shot Steven Singer, 48; a 43-year-old man who was in critical condition, and a 32-year-old woman, Thompson said.
The law firm of Osborn Maledon identified one of its attorneys, Mark Hummels, as one of the victims. He was involved in a client mediation when he was shot, the Phoenix firm said.
"We believe the two men were his targets," Thompson said. The woman, whose injury was not life-threatening, "just happened to be in the way when the shooting occurred."
Harmon then fled in a 2013 Kia Optima, Arizona license plate AVS-2052, he said. Harmon shot at a witness who was following him, Thompson said. "Anybody who contacts him needs to be aware that he is armed and dangerous," he said.
Two other people who were not shot were also taken to a hospital, one for "some other type of injury not related to gunfire," and the other "may have been related to stress," Thompson said.
Former astronaut Mark Kelly referred to the shooting during a Senate Judiciary Committee hearing in Washington on gun violence. "There's 50 or so police cars on the scene," he said.
Kelly and his wife, former Rep. Gabrielle Giffords, D-Arizona, this month launched Americans for Responsible Solutions, which seeks to raise money to counter the influence of the gun lobby.
Two years ago, Giffords was shot in the head by a gunman in a parking lot in Tucson.
CNN's Deanna Hackney in Atlanta and Casey Wian in Phoenix contributed to this report.
Part of complete coverage on
updated 2:46 PM EST, Wed January 30, 2013
The federal background check system for gun buyers didn't stop a mentally ill man from buying a gun, which he used to kill his mother.
updated 9:15 PM EST, Wed January 30, 2013
Rather than focusing on gun restrictions, the NRA is promoting a focus on fixing the nation's mental health system.
updated 1:28 PM EST, Wed January 30, 2013
Wayne LaPierre is not a large man. Yet, in Washington, he can make even brave politicians toss in the towel at the first sign of a scuffle.
updated 12:17 PM EST, Tue January 29, 2013
More than 6,000 people are killed each year by handguns. That's like having a massacre on the scale of Newtown 239 times during one year.
updated 3:18 PM EST, Sat January 26, 2013
On one side were pegboard panels mounted with various assault rifles and semi-automatic weapons -- including a Bushmaster similar to the one used in last month's Newtown school massacre.
updated 2:48 PM EST, Mon January 28, 2013
The National Rifle Association chief issued a blistering retort to President Barack Obama's inaugural address, accusing him of name calling and limiting American freedoms.
updated 2:50 PM EST, Mon January 28, 2013
President Barack Obama proposed a package of measures intended to reduce gun violence in the wake of the Newtown school massacre last month. But would they work?
updated 3:41 PM EST, Sat January 26, 2013
Proponents of gun control hold a March in Washington, while small number opponents gather to express their views.
updated 7:11 AM EST, Wed January 16, 2013
A month after the deadly school shootings in Newtown, Connecticut, the National Rifle Association is taking heat for releasing a mobile video game that lets players learn how to shoot at targets.
updated 7:49 AM EST, Mon January 28, 2013
Gens. Michael Hayden (Ret.) and Stanley McChrystal (Ret.) weigh in on America's gun debate.
updated 3:00 PM EST, Mon January 28, 2013
The "universal background checks" now being pushed by some gun control supporters is code for closing loopholes on such checks at gun shows and other private sales.
updated 3:01 PM EST, Mon January 28, 2013
Two couples rooted in the American mainstream. Two spouses who were nearly killed by mentally ill gunmen.
updated 3:02 PM EST, Mon January 28, 2013
Mass shootings in 2012 reignited the debate over legislation to combat gun violence. Here's a look at laws already on the books in the United States dealing with firearms.