PHOENIX -- Police have confirmed that one person has died after a shooting at a business complex near 16th Street and Glendale Avenue in Phoenix Wednesday morning.

Police are searching for the suspected shooter, Arthur D. Harmon, 70. He may have left the shooting scene in a white 2013 Kia Optima with license plate AVS 2052. Police believe he is armed and dangerous.

Phoenix police spokesman Sgt. Tommy Thompson said a triple shooting occurred during a meeting about some type of pending litigation at about 10:30 a.m. Police do not believe this was a random shooting, but they have not said who was targeted.

A shooting victim, identified as Steve Singer, 48, died from his injuries.

A second victim is listed in critical condition. Police did not identify that victim, but the Osborn Maledon law firm said he is attorney Mark P. Hummels. A spokesperson said Hummels was involved in mediation when the shooting occurred.

The third victim, a 32-year-old woman, suffered non life-threatening injuries. There are reports that two or three additional people suffered stress-related illness or other injuries.

Witnesses told 3TV reporter Kristine Harrington that the shooting occurred in the lobby of the three-story building. Some witnesses reported hearing six or seven shots and others said there may have been as many as 10.

Police evacuated the building and cleared a parking garage.

Police later converged on Harmon's home near 28th Street and Greenway Road, a little more than seven miles from the shooting scene. Officers talked to Harmon's son, who was in the home at the time, but he did not give police permission to search the house so police had to wait for a search warrant.

A SWAT team busted into the home at about 3:30 p.m. Sgt. Steve Martos said police did not find Harmon, but his wife and son were in the house.

Harmon is a former employee of Goodmans Interior Structures and the company was placed on lockdown as a precaution.

Police also cordoned off an area near Central Avenue and Thomas Road after the shooting, however officers, took down the crime tape at about 2:15 p.m.

Police shut down 16th Street between Glendale and Northern avenues for the investigation.

Anyone with information about Harmon's whereabouts is asked to call police or 911.

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