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RIGBY - A Rexburg woman was charged Monday with burglary and two counts of first-degree murder in the stabbing deaths of her ex-husband and his girlfriend.

Shanna Parkinson Whitmore, 38, was arrested at Madison County Memorial Hospital Sunday after authorities linked her to the slayings early Sunday of Greg Whitmore, 38, and Karen Cummings, 30.

Police declined to say how they linked her to the crime.

The bodies of Greg Whitmore and Cummings were found by officers in Whitmore's Rigby home at 236 W. Second South. Police received a call from Cummings' daughter around 3 a.m. from the home.

Rigby Police Chief Larry Anderson said both victims had been stabbed multiple times, but the weapon, a sharp object, had not been recovered. Cummings was found in the bedroom and Whitmore was found in the kitchen. Results from the autopsy have yet to be released.

It also hasn't been determined If a struggle was involved.

Anderson said Shanna Whitmore called 911 from the Fastop convenience store south of Rexburg, telling the dispatcher that she was covered with blood but did not know how it got on her.

An ambulance picked her up at the convenience store and took her to the hospital in Rexburg, where investigators from the various jurisdictions linked her to the killings and arrested her, Anderson said.

The Whitmores had been divorced for two to three years, the chief says.

She is being held in the Jefferson County Jail as the investigation continues. Bail was denied at her initial appearance.

A preliminary hearing will be set. It must be held within 14 days of he initial court appearance.

Also investigating the case are the Idaho State Police, the Rexburg Police Department and the Madison County Sheriff's Office.

If found guilty she could receive the death penalty. Whitmore told Judge Michael Kennedy Monday afternoon her friends were helping get a lawyer.

Anderson says at this point Whitmore is the only suspect in the case.