CHICAGO (AP) — An Oxford University employee accused of killing a 26-year-old hair stylist was extradited to Chicago late Friday night. Oxford University financial officer Andrew Warren arrived in Chicago just before midnight from California. He and 43-year-old Wyndham Lathem, a former Northwestern University professor, face charges of first-degree murder for the death last month of Trenton James Cornell-Duranleau, a Michigan native who had been working in Chicago. Authorities say Cornell-Duranleau suffered more than 40 stab wounds to his upper body during the attack in Lathem's high-rise Chicago condo. Lathem and Warren, 56, surrendered peacefully to police in northern California on Aug.