PHOENIX (Reuters) - A man believed to be the suspect in a fatal Phoenix office shooting has been found dead from an apparent self-inflicted gunshot wound, police said on Thursday.

Arthur Douglas Harmon, 70, was suspected of opening fire in an office building on Wednesday following a legal mediation meeting, shooting dead one man and wounding two other people including a prominent Phoenix lawyer, before fleeing in a car.

Phoenix police said officers in the Mesa suburb had located the suspect's Kia Optima sedan and "an individual matching the suspect description nearby with what appears to be a self-inflicted gunshot wound."

Harmon had opened fire following a morning meeting involving a legal dispute. Police said two men struck by gunfire appeared to be the intended victims. A third victim, a woman, was not believed to have been intentionally targeted.

(Reporting by Tim Gaynor; Editing by Paul Thomasch and James Dalgleish)