LANCASTER (AP) — Authorities say there’s a new development in the 1992 unsolved slaying of a Pennsylvania elementary school teacher.

Lancaster County District Attorney Craig Stedman has scheduled a news conference Wednesday to discuss progress in the case.

Christy Mirack was raped, beaten and strangled in her East Lampeter Township apartment on Dec. 21, 1992. The 25-year-old was a first-grade teacher at Rohrerstown Elementary School.