COEUR D'ALENE, Idaho -

Authorities confirm the shooter and victim in the shootings in Coeur d'Alene over the weekend were acquaintances but investigators are continuing to look into that relationship to determine a motive.

Kootenai County Sheriff's Department Major Ben Wolfinger said that Christian Buquet, 19, and also known as Christian Mallon, knew Frank James and authorities are continuing to investigate what happened in the moments leading up to Buquet shooting James in the chest.

James, 29, survived the shooting and was rushed into emergency surgery; as of Monday afternoon he is in stable condition.

Buquet, 19, was shot by police after a five-mile chase during which he fired randomly at passersby and police officers.

"He shot at the car. He shot at a guy walking his dog," Wolfinger said.

The chase ended at Higgins Point, where he lost control of his car, spun out, opened fire again on officers and was killed by their return fire.

"It's a homicide no mater how you look at it. It's whether it was justifiable homicide," Wolfinger said.

So far no motive has been determined for the shooting. Buquet was arrested one time as an adult for attempted robbery in 2011. Friends said that he was shy but sweet and working on getting his life going. They also said he was married and expecting a child.

An autopsy is being performed on Buquet Monday; a toxicology report will help determine eventually whether or not any drugs or alcohol were in his system at the time of his death.

Investigators are looking for evidence at five different crime scenes stretching five miles from where James was shot to Higgins Point where the chase ended and Buquet was shot and fatally wounded.

The officers involved in the shooting will be interviewed Tuesday.