ALLENTOWN, Pa. -

A Lehigh County grand jury is now investigating the suspicious death of a pro-wrestler's girlfriend.

Nancy Argentino died under "unusual circumstances" in Lehigh County in the spring of 1983.

Family members said Argentino, 23, was in town with her boyfriend, professional wrestler Jimmy "Superfly" Snuka,  who was performing at the Allentown Fairgrounds.

A few months ago, Argentino's sisters contacted the district attorney, asking him to take another look at the case.

The grand jury investigation is expected to take several months.