Bulletin:

One officer was killed and two others wounded Thursday in Corona and in Riverside by a gunman believed to be Christopher Jordan Dorner, the fired Los Angeles Police officer wanted in the slayings of a college basketball coach and her fiance in Irvine, police said.

The shootouts occurred in Riverside County early this morning, said Riverside police Sgt. Troy Banks.

The lawman shot in Corona is an officer from the Los Angeles Police Department’s Newton Station who suffered a graze wound, said Newton Station Sgt Ike Ornelas.

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IRVINE – Police have identified a former Los Angeles Police Department officer they suspect of shooting to death a newly engaged couple in an Irvine parking garage, as a manifesto the man wrote targeting LAPD officials, including the father of one of the victims, became public.

Irvine Police Chief Dave Maggard at a news conference Wednesday night asked for the public’s help in locating Christopher Jordan Dorner, 33, in connection with the slayings of Monica Quan and Keith Lawrence.

Maggard declined to specify a motive for the shootings but indicated that police had uncovered a “multipage manifesto” written by Dorner in which he “implicated himself in the slayings.”

Police did not release any copies or excerpts from the manifesto. However, Dorner’s lengthy, rambling manifesto was posted online by KTLA.

The manifesto includes threats against LAPD officials, including Quan’s father, who had a long career with the department, becoming its first Chinese American captain. LAPD officials cited in the manifesto are believed to be the ones who served on review-board hearings when Dorner was fired from the department.

“Your lack of ethics and conspiring to wrong a just individual are over. Suppressing the truth will leave to deadly consequences for you and your family. There will be an element of surprise where you work, live, eat and sleep,” he wrote, referring to Quan and several others. “I never had the opportunity to have a family of my own. I’m terminating yours.”

Dorner wrote that the LAPD had “suppressed the truth” and that it would lead to “deadly consequences.”

“Self preservation is no longer important to me. I do not fear death as a I died long ago on 1/2/09,” Dorner wrote, referencing the day he was fired from the LAPD. “I was told by my mother that sometimes bad things happen to good people.”

Dorner was an LAPD officer through 2009 and a reservist for the U.S. Navy, Maggard said. In a statement released late Wednesday, the LAPD acknowledged that Dorner had made threats against members of the department and that they were taking the threats seriously.

Police say Dorner’s last known address was in the 4900 block of Sharon Drive in La Palma.

“Dorner’s whereabouts are currently unknown, and he is likely armed and dangerous,” Maggard said.

Court records show Dorner lost his job and waged a four-year legal battle against the LAPD that was highlighted by claims that he had faced separate incidents of racism and retaliation.

In an Oct. 3, 2011, ruling, the state 2nd District Court of Appeal in Los Angeles upheld a Superior Court ruling dismissing a lawsuit Dorner had filed against the LAPD over his dismissal from the force.

Dorner had complained in his lawsuit that his field training officer had in July 2007 unnecessarily kicked an unruly suspect trespassing at the Doubletree Hotel in San Pedro. But the LAPD board found that Dorner’s “complaint was false and therefore terminated his employment for making false statements,” the court ruling says.

The board ruled after hearing from a dozen witnesses including Dorner, a police captain, five sergeants, a detective and other witnesses, including the man who Dorner alleged had been kicked by the field training officer.

The training officer denied assertions she had kicked the suspect in the face or the shoulder area but said she did shoot him with a Taser, the ruling says.

She had told Dorner that he needed to improve his performance.

Records show that before his dismissal, Dorner believed he had been targeted for retaliation for complaining about the officer’s conduct and that one act of alleged retaliation involved someone urinating on his equipment bag at the police station. However, an analysis of the unknown substance found it was not urine, the court ruling says.

Records show Dorner testified that he graduated from the police academy in February 2006 but left for a 13-month military deployment in November 2006. He returned to the LAPD in July 2007, just a few weeks before the incident in San Pedro.

The Irvine homicide investigation began Sunday, when officers responding to reports of someone slumped in a car within the parking structure for the Avenue One condominium complex found Lawrence and Quad dead in the vehicle. Authorities say the couple was shot where they were found.

Autopsies determined that Lawrence, a USC public safety officer, and Monica Quan, a Cal State Fullerton basketball coach, died of multiple gunshot wounds, said Jim Amormino, an Orange County Sheriff’s Department spokesman.

Few details of the shooting itself have been released, and authorities declined to release any information from the autopsies beyond the cause of the couple’s death.

Neighbors of the residence police identified as Dorner’s last known address were surprised by the allegations. They said Dornan lived at the residence, a well-kept, one-story home, with his mother.

“He seemed like a regular Joe,” said Brian Jon, who lives a block away. “This is really shocking.”

Alfredo Serrano, who lives on the same block, remembered seeing Dorner doing sprints up and down the street about four years ago. Dorner told Serrano he was training to join the police force.

“He was a nice guy,” Serrano said. “He was polite. He would wave to you.”

About 9:30 p.m., a man who claimed to be Dorner’s uncle but who wouldn’t identify himself otherwise ran up to the door of Dorner’s residence and pounded on the door several times.

“I’m just trying to find my nephew,” the man said, claiming he hadn’t spoken to Dorner in several years.

Lawrence, 27, and Quan, 28, met at Concordia University in Irvine, where they each played guard for the school’s basketball teams.

After graduating with a bachelor’s degree in exercise sports science and a master’s degree in coaching and athletic administration, Quan became an assistant coach at Cal Lutheran in Thousand Oaks and then Cal State Fullerton, where she became known as “Coach Mo.”

After graduating with a degree in business administration, Lawrence was hired in August as an armed officer to patrol at USC.

Authorities are asking anyone with information about Dorner’s whereabouts to call the police tip line at 949-724-7192 or to email ipdcrimetips@cityofirvine.org.

Staff writers Kimberly Pierceall and Marilyn Kalfus contributed to this report.

Contact the writer: 714-796-7939 or semery@ocregister.com