Two days after Emma Roark went missing from her Rancho Cordova home on Jan. 27, her father got a call from a man who was using her cellphone. Gabriel Roark then called sheriff’s deputies and told them he was going to meet him. He found a man named Cedric Sandiford, who handed over the phone. Sandiford told Roark he had purchased it from Mikilo Morgan Rawls, the man now accused of killing Emma Roark, newly filed court documents say.