A man who described himself as a horror novelist has been arrested after police discovered body parts in his flat.Detectives found a novel titled Cannibalistic Instincts in Jose Luis Calva's apartment along with his girlfriend's torso in a cupboard, a leg in the fridge and bones in a cereal box.Calva told Mexican police he had boiled some of his girlfriend's flesh but said he had not eaten it, a source said.Investigators were trying to determine if chunks of fried meat found in a pan in the apartment were human, the spokesman said.Police came to Calva's apartment after neighbours reported a fetid smell.They discovered the dismembered body of his girlfriend Alejandra Galeana in a closet, the spokesman said.The family of Galeana, a 30-year-old pharmacy clerk, reported her missing on Friday and told police of her relationship with Calva.Calva is being investigated in the killings of two other women, including an ex-girlfriend, a pharmacy worker, whose dismembered body was found in 2004, and an unidentified prostitute who was killed earlier this year.Calva tried to run from police to avoid arrest, but was struck by a car and is now recovering in hospital.© Independent Television News Limited 2007. All rights reserved.