An 8-year-old Arizona boy charged in the deaths of his father and another man is set to undergo a mental health and competency evaluation in Phoenix on Monday.

An expert for the defense already has conducted an evaluation of the boy. Judge Michael Roca has put a hold on the case until the evaluations are finished.

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The evaluation had been scheduled last week, but bad weather forced it to be moved.

A status conference in the case is also set for Monday in St. Johns.

The boy faces two counts of premeditated murder in the deaths of his father, 29-year-old Vincent Romero, and 39-year-old Tim Romans, who was renting a room in the family's home.

Police say the boy used a .22-caliber rifle to carry out the shootings on Nov. 5 in St. Johns as the men arrived home from work.