VESTAL, N.Y. — A graduate student in New York is accused of fatally stabbing a 77-year-old Binghamton University anthropology professor.

Authorities say Abdulsalam al-Zahrani was charge today with murder in the death of Richard T. Antoun.

Broome County District Attorney Gerald Mollen says that Antoun knew al-Zahrani from school.

Mollen says there’s no indication of religious or ethnic motivation in the attack.

The suspect was arraigned on Saturday.

Mollen said he didn’t know whether al-Zahrani’s had an attorney.

There was no phone listing in Binghamton for the 46-year-old Saudi national.

Antoun authored several books, including “Understanding Fundamentalism: Christian, Islamic, and Jewish Movements.”