The killings attributed to a former Los Angeles police officer may have started with the daughter of a former Cal Poly Pomona police chief.
Monica Quan, 28, and her fiance Keith Lawrence, 27, were found shot to death in their car in a parking structure Sunday night, Irvine police officers said.
The investigation into their deaths led officials to Christopher Jordan Dorner, 33, a former LAPD officer and U.S. Navy reservist whose last known residence was in La Palma.
Quan's father, Randal Quan, represented the suspect before a disciplinary board shortly before Dorner lost his job with the LAPD. Dorner apparently referenced that in a lengthy manifesto that outlined his desire to seek revenge on people he believes
"Look your wives/husbands and surviving children directly in the face and tell them the truth as to why your children are dead," he wrote. "I never had the opportunity to have a family of my own, I'm terminating yours."
Dorner was with the Police Department from 2005 to 2008.
According to documents from a court of appeals hearing in October 2011, Dorner was fired from the LAPD after he made a complaint against his field training officer, saying she kicked a man while trying to arrest him.
Randal Quan, who became a lawyer in retirement, was hired by the LAPD officers' union to represent Dorner at an internal LAPD hearing, said Los Angeles Councilman Dennis Zine, an LAPD officer of 33 years who worked alongside Randal Quan for several years.
LAPD officers accused of significant administrative violation go before a Board of Rights hearing and are provided a defense attorney, as they would be in a criminal trial.
"In this particular case, (Dorner) was found guilty and the determination was termination," Zine said.
"Now he blames Randy for not putting out a good defense."
Quan, the first Chinese-American captain in LAPD history, retired in 2002.
In October 2002, Quan was hired as police chief at Cal Poly Pomona. Six months later, he was fired. Quan filed a lawsuit against the school in 2004.
"Quan, the former Cal Poly Pomona campus police chief who was non-retained, filed this action complaining that he was terminated because he objected to hiring an African American female," according to California State University documents.
The lawsuit was settled for $32,000, said Dan Lee, a spokesman for Cal Poly Pomona.
Staff Writer Brian Day and The Associated Press contributed to this report.