Based on a familial DNA search, the Los Angeles Police Department arrested Lonnie Franklin, Jr., in connection with the 'Grim Sleeper' serial killer case, reports the New York Times. Colorado and California are the only US states with a "codified policy permitting a so-called familial search," the Times adds. Franklin's son Christopher had been convicted of a weapons charge and the state lab noted a familial connection between Christopher's DNA and DNA evidence from the old crime scenes.