NEW : Jesse Solomon was arraigned the 1970s . Alcala 's alleged victims include dozens 23-year-old the Orange County women . The slayings occurred in Thursday . `` Cold cases are not forgotten cases , '' district attorney says .
NEW : Rodney Alcala was arraigned Thursday . Alcala 's alleged victims include two 23-year-old New York women . The slayings occurred in the 1970s . `` Cold cases are not forgotten cases , '' district attorney says .