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Woman arrested in 1983 Iowa horse ranch double-murder

Steven Fisher, left, and Melisa Gregory CBS affiliate KGAN-TV

NEWTON, Iowa - An Iowa woman has been charged in the 1983 slayings of her estranged husband and his girlfriend, who were found bludgeoned to death at a horse ranch.

Theresa Lynn Supino's arrest in the March 3, 1983, deaths of Steven Fisher and Melisa Gregory came on the 31st anniversary of the killings.

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Theresa Lynn Supino
CBS affiliate KCCI
Supino, of Altoona, is charged with two counts of first-degree murder. The now-53-year-old is being held at the Jasper County Jail in Newton.

Supino was married to Fisher at the time of his death, but they were separated with two children. The 20-year-old Fisher was dating the 17-year-old Gregory.

"Deep down, I think everybody has known there was a connection there somewhere," Gregory's sister-in-law, Karen Gregory, told CBS affiliate KCCI of Supino's alleged involvement in the murders.

Fisher and Gregory's bodies were discovered on the Copper Dollar Ranch, where Fisher worked, about four miles northwest of Newton. Autopsies found that they died of massive head injuries.

Family and friends gathered outside the Jasper County Courthouse Monday night to honor the victims in a vigil.

  • Crimesider Staff

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