“I threw up my arm because I thought the guy was going to kill me, thought he was going to shoot me,” Supplee told investigators. “I threw up my arm in the defensive position, and I fired.”

When he told Keinonen to show him his hands, Supplee said, “He never said anything – he didn’t even throw his hands up. … He stood – he stayed in that same exact position.”

The other officers said they heard Supplee’s shouted commands before the shot, then ran over and saw Keinoen laying on the ground. Supplee, still with his K-9, told them they needed to administer first aid and Unmitz began CPR

Wiles said he spoke with Supplee minutes later and that Supplee repeatedly asked him, “Did you find the gun?”

“No gun was located,” Flaherty wrote.

At Wednesday's news conference with Bend Police Chief Jeff Sale, Flaherty told reporters invstigators on't know for sure what Supplee saw in Keinonen's other hand.

"A Bluetooth device was found next to Mr. Keinonen, and may have been the 'bulge' Officer Supplee believed was a gun," the DA told NewsChannel 21.

Supplee is off administrative leave and will return to regular duties, the officials said.

Officers Umnitz and Lovrien told investigators that when they knocked on the front door, Keinonen came to a window near the door. When they identified themselves as police, they said Keinonen began heading toward the back door, and they “told him not to run and that there was a police dog behind the house.”

Here's the complete five-page report issued by Flaherty.