Mexico City ? Forensics experts said Monday that chunks of flesh found in the apartment of an aspiring horror novelist were human, and that DNA tests were planned to confirm whether it came from the body of his girlfriend.

Dr. Rodolfo Rojo, chief medical examiner for Mexico City’s prosecutor’s office, said flesh found on the plate and frying pan in suspect Jose Luis Calva’s apartment corresponded to parts missing from the corpse of his 32-year-old girlfriend, Alejandra Galeana.

Police found Galeana’s body in a closet in the suspect’s apartment last week after her family led police to the building. Prosecutors said she had been strangled and partially dismembered.

Police said that a search uncovered an unfinished novel by Calva titled “Cannibalistic Instincts.” One witness, whose name was withheld by officials, said Calva was fascinated by witchcraft and explicit and sadistic literature.

Prosecutors said Calva may have killed two other women whose dismembered bodies were found in Mexico City in 2004 and 2007. Like Galeana, both were strangled.