Who killed University of Chicago theologian Ioan Culianu? At first, police thought the Romanian born Culianu, found slain in a locked university bathroom stall last week, might have committed suicide. But an autopsy revealed he was shot in the head by someone standing on a toilet in an adjacent stall. Police ruled out robbery because Culianu's wallet wasn't taken. Some students speculate that Culianu, an outspoken foe of former Romanian dictator Nicolae Ceausescu, may have been slain by a pro-Ceausescu fanatic. Another theory: Culianu's killing may have been linked to an occult-studies conference he ran.