Cannon's wife and 6-year-old daughter were not hurt. Hillsboro police say Cannon's wife called police to the residence at about 8:30 p.m. Sunday. Cannon was off-duty at the time.
Authorities Monday morning would not release specific details about what occurred inside the home. Washington County sheriff's deputies and Forest Grove police officers entered Cannon's home while responding to the disturbance. A gun was fired at some point while police were in the home and the deputy was injured.
Sgt. David Thompson, a sheriff's office spokesman, said detectives are still trying to piece together what occurred. He expected that investigators will remain at the scene all of Monday and likely Tuesday.
Capt. Mike Herb, a Forest Grove police spokesman, said on Sunday night that an officer was shot during a standoff. Herb said the suspect barricaded himself inside the home. The sheriff's office would not confirm that information Monday morning.
Thompson said some members of the county's Tactical Negotiations Team responded to the incident.
Cannon, a patrol officer with Hillsboro police, received a 2012 Life Saving Award, according to the Oregon Peace Officers Association.
Lt. Mike Rouches, a spokesman for the Hillsboro Police Department, said the agency has no indication that Cannon has any history of domestic violence. He has no disciplinary record.
"We've not been in this situation," said Rouches, referring to the severity of the accusation against Cannon. "Obviously, he'll be placed on administrative leave."
Rouches said Hillsboro police will conduct an internal investigation after the criminal inquiry into Cannon is completed. Cannon most recently worked swing shift for the agency.
Washington County sheriff's officials have not identified the deputy who was wounded in the incident. The deputy and Cannon were both treated and released at the hospital.
Neighbors told The Oregonian Monday morning that they heard as many as 16 shots Sunday night, many in rapid succession. One neighbor reported hearing eight shots in rapid succession followed by another eight. During the incident, police evacuated some residents from their homes, including Richard Highhouse, 65, who was watching television when police knocked on his door and asked that he go to a nearby church.
"It's a pretty quiet neighborhood, really," said Highhouse, who doesn't know the Cannons.
Scott Brown, 49, lives a street down from the incident and was not asked to evacuate. He said he heard between 10 and 15 shots in rapid succession. After that, the gunfire ceased. He remained inside and checked the neighborhood webpage, updated by the neighborhood watch, for additional information.
He didn't know the family involved, but was aware a police officer lived down the street. The neighborhood was shocked to hear the officer is accused in the incident.
Brown watched Sunday night as police cars arrived and officers took up position at a nearby house. He said the several police officers and firefighters who live in the neighborhood give him a sense of security.
"Most people moved here because they wanted peace and quiet," Brown said. "The neighbors are very friendly here. This came as a complete surprise."
The area where the incident occurred remained blocked off with yellow-and-black crime scene tape Monday morning. A sheriff's office mobile command unit and a state police forensics vehicle were at the scene.
Source-Oregonian