A 68-year-old man pleaded not guilty Wednesday to murdering his wife after the police found her severed head in a freezer and her body parts cooking on the stove at their Oceanside home. The man, Frederick Hengl, looked frail as he entered his plea, and his lawyer has requested he receive medical attention, according to U-T San Diego. The police said they responded to neighbors’ complaints about a foul odor coming from the couple’s two-bedroom, bungalow-style house Friday morning. The first officer entered the home and saw three pans on the stove that turned out to contain parts of the victim, Anna Faris, 73. The authorities have not yet determined how she died. The district attorney, Katherine Flaherty, said there was no evidence of cannibalism. Mr. Hengl remained jailed in $5 million bail.