NEW : Pedro Hernandez is quiet and shows no apparent emotion during his arraignment . NEW : A woman who was in the courtroom with him says he did not look at her as she spoke to reporters outside court. Authorities believe Hernandez killed Etan Patz , a New York boy who went missing 33 years ago . Investigators have not found forensic evidence linking him to the case , official says .
NEW : Pedro Hernandez is quiet and shows no apparent emotion during his arraignment . NEW : His lawyer cites Hernandez 's `` long psychiatric history '' Authorities believe Hernandez killed Etan Patz , a New York boy who went missing 33 years ago . Investigators have not found forensic evidence linking him to the case , official says .