The gunman is believed to be 73 year-old Carey Hal Dyess, who shot and killed people at multiple locations in and around Yuma on Thursday. He was later found dead nearly six hours after of what appeared to be a self-inflicted gunshot wound.
Yuma County Sheriff Ralph Ogden said the first shooting was reported shortly after 5 a.m. in Wellton, about 25 miles east of Yuma. The woman was in critical condition at a Phoenix hospital.
The bodies of four other victims were found in areas of Yuma County. It was unclear when the fifth victim was found dead.
Prominent attorney Jerrold Shelley was killed in his downtown law office while packing up his office on his last day of work around 9:20 a.m.
"This is not a random act," Yuma Police Chief Jerry Geier said. "These victims were targeted."
Shelley represented Dyess' ex-wife in their 2006 divorce, which was Dyess' fifth. Vida Florez, a Yuma attorney who knew Shelley, said she learned of the shooting after leaving court. She said she heard from a witness who spoke to the police about what happened inside the office.
"They said the shooter came in and told the secretary to `Get out of here,"' Florez said. "She did, and he shot Jerry Shelley and he left."
Court records show Dyess was involved in two civil court cases, one in Yuma and one in Wellton. A judge issued an order of protection against Dyess in one of the cases in 2006, and a court clerk said it stemmed from Dyess' divorce.
No information was immediately available on those cases. But the Yuma mayor says the victims were friends and relatives of the gunman, who is believed to have been upset over a divorce case.
The Associated Press contributed to this story