Investigators from three states will meet in Salt Lake City today to discuss a case grabbing national attention. 

Authorities in Arizona, Utah and Idaho believe Lori Vallow-Daybell was involved in the deaths of her ex-husband Charles Vallow, her brother Alex Cox, and her current husband's former wife, Tammy Daybell. 

Investigators have still not located Vallow-Daybell's two children, Joshua and Tylee. 

The suspect is currently in custody in Idaho on one-million-dollars bond. 

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