The incident began around 3:30 a.m. when Deon Fisher drove through a front window and several feet into the home in the 15300 block of SE 307th, officials said.
"He goes in the house starts firing shots, looking for his ex-wife," said Sgt. Cindi West with King County Sheriff's Office.
Fisher soon found his ex-wife then shot her in the hand. After wounding her, Fisher sped off, police said. Deputies tried to catch up to the man but he was lost in the Maple Valley area.
The woman was taken to a local hospital for treatment of her wound. West says their three children, ages 10 to 18, were also in the house but managed to escape injury.
"I understand a couple jumped out the back window when he came into the house, another stayed and hid inside the house," West said.
Later Thursday, Snohomish County sheriff's deputies say they found the man's truck about 9 a.m. at the Lake Serene Trailhead, just off of Highway 2.
Sultan, and then discovered the body of a man nearby who had apparently committed suicide.
King County sheriff's Sgt. Cindi West says their investigators are working under the assumption it's Fisher, but it will be up to the medical examiner to confirm the body's identity.
The couple divorced in 2009, and documents show that the victim recently applied for a protection order against Fisher. A judge denied the request.