Levi Aron is arraigned before Judge William Miller in Brooklyn...

Levi Aron is arraigned before Judge William Miller in Brooklyn criminal court in New York. The confession of Aron, charged with kidnapping, smothering and dismembering an 8-year-old boy, was coerced by authorities who took advantage of his fragile mental state, defense attorneys said Monday, Oct. 24, 2011. Credit: AP

Defense attorneys for a New York City man charged with abducting, killing and dismembering an 8-year-old boy say his confession was coerced.

At a hearing Monday, they said authorities told Levi Aron what to write down. They say he is not sane enough to be aware of his actions.

Aron has pleaded not guilty in the death of Leiby Kletzy.

Attorney Howard Greenberg says they intend to prove their client is not guilty by reason of insanity.

Leiby went missing July 11 while walking home from a religious day camp in Brooklyn. Police say the boy's severed feet were found in the freezer at Aron's apartment.

Prosecutors say the boy got lost on his walk home and asked Aron, whom he met on the street, for help.

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After 47 years, affordable housing ... Let's Go: Williamsburg winter village ... Get the latest news and more great videos at NewsdayTV

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