ONEIDA, N.Y. (AP) — Federal investigators are offering a $20,000 reward for information that may help solve a 38-year-old missing person case in central New York.

College student Tammy Mahoney was last seen hitch-hiking on state Route 46 in Oneida on May 8, 1981. Authorities believe the 19-year-old Long Island native was raped and murdered after attending a party on Oneida Nation tribal land. Her body was never found.

At a news conference Thursday, FBI Special Agent James Hendricks announced the reward and said "recent events" led officials to believe there may people with information about what happened to Mahoney. He gave no specifics.

The Oneida Nation said it would match the FBI's reward with an additional $20,000.

Mahoney was a student at the State University of New York at Morrisville when she disappeared.