The parents of a woman slain 23 years ago are demanding to know why it took so long for Los Angeles police to focus on one of their own as a suspect, despite several angry confrontations between their daughter and the accused veteran investigator.

Detective Stephanie Lazarus, 49, is accused of killing Sherri Rasmussen, her ex-boyfriend's wife, in 1986, when Lazarus had been on the police force for two years.