The defendants accused in the deaths of an elderly Tucson couple were arraigned on first-degree murder charges Thursday in Pima County Superior Court.

Kyle Austin Drattlo, 20, Brianna Harding, 21, and Christopher Edward Terry, 23, stand accused of killing Drattlo’s aged grandparents Erskin and Mary Fulgham on July 23.

The defendants pleaded not guilty to the charges, which include two counts of first-degree murder, two counts conspiracy to commit fist-degree murder, burglary in the first degree, armed robbery, aggravated robbery and theft of a means of transportation.

Public defenders were appointed to the defendants' cases.

Contact reporter Patrick McNamara at 573-4241 or On Twitter @pm929.