San Diego County prosecutors say a preliminary hearing for 68-year-old Frederick Hengl was postponed indefinitely Tuesday.
Hengl's lawyer, Debby Kirkwood, says he was hospitalized on Saturday with severe pain in his leg and hip. She says he has a serious physical illness and also has been depressed since his wife's death.
Hengl has pleaded not guilty to a charge of murder in the death of 73-year-old Anna Faris, who had Alzheimer's disease.
Reports of a foul odor sent police to an Oceanside home last November. Authorities say they found the woman's severed head in a freezer and some body parts cooking on the stove.
However, there was no sign of cannibalism.