A murder case that has been unsolved for more than 100 years has a suspect, and authorities are calling it “the most bizarre murder case ever.”

On Tuesday, the FBI announced it was seeking the public’s help to find an unknown person of interest in connection with the killing of 25-year-old Sandra Lavelle.

Lavelle’s body was found in her home in Springdale, Texas, in August of 2018.

Her death sparked a major investigation into the case that spanned more than 10 years, and led to the arrests of two men.

The investigation led authorities to a small ranch owned by the same people involved in Lavelles murder.

The FBI has been in contact with the owners of the ranch, and the owner is currently being interviewed by the agency, the agency said in a statement.

The search for the person of unknown interest is continuing.