Authorities on Wednesday afternoon identified the shooting suspect as 70-year-old Arthur Douglas Harmon.
Harmon fled the shooting scene at 16th Street and Glendale Avenue in a rental car. The vehicle was described as a white 2013 Kia Optima, with Arizona license plate AVS-2052, according to Sgt. Tommy Thompson.
SWAT officers were unable to locate Harmon at his home near 28th Street and Acoma Drive in north Phoenix. Officers and two armored vehicles could be seen outside the home as SWAT officers made their way inside.
Sgt. Steve Martos said police outside the home were interviewing the 70-year-old's wife and son.
Police said Harmon's son initially refused to let police into the home, so they had to wait outside for a search warrant.
Harmon's body was later found Thursday morning with a self-inflicted gunshot wound at Mesa Riverview, police said.
Authorities said they removed several items from Harmon's home, but would not elaborate on what they found.
A homeowner who lives nearby told ABC15 Harmon's cell phone was found in the front yard of a home about three miles away from where Harmon lives.
An exclusive Google Street View photo showed us the first glimpse at Harmon, seen gardening outside his house. It is unclear when the image was captured.
Harmon was involved in a lawsuit with another person living at the north Phoenix home. It is believed the shooting happened after a scheduled mediation regarding the lawsuit.