Mexico City ? An aspiring horror novelist was arrested after police discovered his girlfriend’s torso in his closet, a leg in the refrigerator and bones in a cereal box, the city prosecutor’s spokesman said Thursday.

Nearby they found the draft of a novel titled “Cannibalistic Instincts,” said the official, who spoke on customary condition of anonymity.

Jose Luis Calva told police he had boiled some of his girlfriend’s flesh but that he hadn’t eaten it, the spokesman said.

The official also confirmed other details released by the prosecutor’s office Wednesday night: that body parts were spread throughout the apartment, and that Calva is being investigated in the deaths of three women whose mutilated bodies had been found in and around the capital.