After Sherri Rae Rasmussen was beaten and shot to death in 1986, her father urged Los Angeles police to investigate a fellow officer who had had confrontations with his daughter in the months leading up to her death, according to attorneys for the victim's family.
It was only this year, after LAPD cold-case detectives reopened the investigation and interviewed Rasmussen, that Det. Stephanie Lazarus became a suspect. The father's suspicions were bolstered Friday when police arrested Lazarus in connection with the slaying. On Monday, prosecutors charged Lazarus with capital murder, leaving open the possibility that they may seek the death penalty.
As part of an ongoing effort to solve thousands of old homicides, detectives revisited the case in February, testing blood or saliva samples from the crime scene thought to have been from the killer. DNA tests suggested that the attacker was a woman, contradicting the detectives' theory that she had been killed by a man. The cold-case detectives contacted Rasmussen and asked if he knew of any women with whom his daughter might have clashed. Rasmussen once again voiced his theory about Lazarus. This time detectives looked into it.
Why it took 23 years to charge this detective, I have no idea. The article is here.