Cops: Man Caught in Hospital Necrophilia Act

"It's an extraordinarily rare condition, but it's also a very real condition," said Fogel, who previously served as the director of the Sex Offender Evaluation Unit for the Illinois Department of Corrections. In more than 1,500 evaluations he performed in that role, he said, not one involved the condition of necrophilia.

Fogel said the psychological exam will be critical to understanding what type of risk Merino may pose. He also cautioned against simply calling the suspect, if he is, in fact, convicted of the crime, "nuts."

"In these type of cases, it's a sexual attraction that the individual has," he said. "That's what they're aroused to, it's what they have sexual fantasies about."