Sheriff's officials say human remains found in a rural area southwest of Houston are believed to be those of a 15-year-old girl missing for 25 years.

Wharton County sheriff's Sgt. Scott Grosser told KTRK-TV in Houston that new information led authorities to excavate on private land, leading to the discovery of remains believed to be those of Rosemary Diaz. KPRC-TV in Houston reports the remains were found Tuesday.

Grosser says physical evidence indicates the remains belong to Diaz. A family member told KTRK that a ring was found that Diaz is believed to have worn.

The girl went missing in 1990 from a general store where she worked in a small community south of El Campo, about 70 miles from Houston.