Police search for clues in ex- professor's killing

PHILADELPHIA (AP) — Philadelphia police say a violent struggle preceded the fatal stabbing of a retired Villanova University professor in her apartment, but that they don't know yet if it stemmed from a personal dispute, a random attack or a robbery.

Authorities say Carol Ambruster, a former assistant professor of astronomy and astrophysics, was killed Monday night and found by her roommate in the kitchen of her apartment.

The Philadelphia Inquirer reports (http://bit.ly/1bGCU7X ) that Chief Inspector Scott Small says the scene indicated a violent struggle, with blood spattered in several rooms of the four-bedroom, second-floor apartment.

An owner of the Germantown apartment building says it's a secure building, with locked wrought-iron gates at each entrance and a call box at the main gate that visitors must use.

The university's campus is near Philadelphia.

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Information from: The Philadelphia Inquirer, http://www.inquirer.com