NEW HAVEN, Connecticut: Clues increasingly pointed to an inside job Monday in the slaying of a Yale graduate student whose body was found stuffed inside a wall five days after she vanished from a heavily secured lab building accessible only to university employees.

Police on Monday sought to calm fears on the Ivy League campus, saying the death of 24-year-old Annie Le was a targeted act but would not say why anyone would want to kill the young woman just days before she was to be married.

"We're not believing it's a random act," said officer Joe Avery, a police spokesman. No one else is in danger, he said, though he would not provide details other than to say that police believe no other students were involved. He also denied reports that police had a suspect in custody.