Updated

The Latest on the killing of an Ohio college student (all times local):

5:15 p.m.

An Ohio sheriff says remains found in a cornfield are a University of Toledo student who disappeared last week while riding her bicycle.

The confirmation Tuesday comes after authorities earlier in the day charged 57-year-old James Worley with aggravated murder in the death of 20-year-old Sierah Joughin (JOH-gihn).

The woman's remains were found Friday about 20 miles outside the city. She was last seen riding her bike along a country road.

Meanwhile, investigators near Toledo have been looking into the possibility of additional victims because the circumstances of Joughin's death are similar to a 1990 abduction attempt near Toledo. In that case, the woman was able to fight off her attacker. Worley was convicted and spent three years in prison in that abduction.

Worley has rejected interview requests. His attorney declined to comment.

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2 p.m.

A man has been charged with aggravated murder in the death of an Ohio college student who disappeared last week while riding her bicycle.

A sheriff's investigator filed a criminal complaint Tuesday accusing 57-year-old James Worley of aggravated murder. He was arrested Friday on an abduction charge in the disappearance of 20-year-old University of Toledo student Sierah Joughin (JOH-gihn).

Authorities found remains they believe to be Joughin's in a cornfield about 20 miles outside the city.

Meanwhile, investigators near Toledo have been looking into the possibility of additional victims.

That's because the circumstances are similar to a 1990 abduction attempt near Toledo when a woman fought off her attacker. Worley was convicted and spent three years in prison in that abduction.

He has rejected interview requests. His attorney declined to comment.