Idaho ? Police arrested a 61-year-old woman and charged her with a killing they say took place nearly three decades ago but went undiscovered until now.

Judy Gough, 61, was charged with first-degree murder and felony use of a firearm on Friday, then moved to a jail in Boise, said police spokeswoman Lynn Hightower.

Authorities spent Saturday searching the woman’s former home, where they say the slaying took place.

Officers learned of the killing recently, and police officials refused to release the name of the person killed, saying it was an ongoing investigation and that family members had not yet been notified.

“This is a case that is a brand-new investigation,” Hightower said. “This is not related to any case that BPD has ever investigated.”