Officer Wilson had three other officers with him that night on October 27 at an apartment complex in Skyline, according to Lt. Kevin Rooney.
Federal marshals and probation officers were looking for Alex Ray Charfauros, 26. Agents forced their way in after someone slammed the door on them and arrested Charfauros.
When another man allegedly ran into a back bedroom, San Diego police officers were called in to help. Officer Wilson was shot in the head as he kicked down the bedroom door along with the other SDPD officers.
The officers have been identified as Travis Whipple, who works as a patrolman at southeastern division, Michael Chinn, a rookie officer who is still training and Officer Michael McLeod who has been on the force for 24 years.
McLeod works with the police dog "Monty" who was shot in the snout during the gun battle. He is still recovering from his injuries.
The officers are currently on paid administrative leave, pending the outcome of the investigation, which is standard practice.
Holim Lee, the man who may have shot and killed officer Wilson, died of a self-inflicted gunshot wound to the head.
Holim Lee's girlfriend, 27-year-old Lucky Xayasene, died of a gunshot wound to the head, the San Diego Medical Examiner reported. The death was ruled a homicide.
Charfauros could face up to three years in prison if he's found to be in violation of his probation and was ordered to return to court Dec. 3. He has not been charged in connection with Wilson's death.