PHOENIX: A gunman opened fire Wednesday at a Phoenix office complex, killing one person, wounding two others and setting off a manhunt. Police warned the public that he was “armed and dangerous.”

Authorities identified the suspect as Arthur D. Harmon, who they said opened fire at the end of a mediation session. They identified a man who died hours after the late morning shooting as Steve Singer, 48.

Police said a 43-year-old man was listed in critical condition and a 32-year-old woman suffered non-life threatening injuries.

“We believe the two men were the targets. It was not a random shooting,” said Sgt. Tommy Thompson, a Phoenix police spokesman.

Thompson said authorities believe Harmon acted alone and fled the scene in a car after the 10:30 a.m. shooting.

Harmon allegedly shot at someone who tried to follow him after the shooting in an attempt to get his license plate number, according to authorities.

Police didn’t immediately release the names of the wounded. But a Phoenix law firm, Osborn Maledon, said one of its lawyers, Mark Hummels, was among the wounded. The firm said he “was representing a client in a mediation” when he was shot.