Tonawanda police charged 55 year old David Heck with manslaughter in the suspicious death of his mother Ruth. Detectives found the 87 year old woman’s dead body inside her Conant Drive home December 30, 2009. Investigators say it had apparently been deceased for days. David Heck was found in the house with self-inflicted wounds. He underwent observation at ECMC. Heck was arraigned Thursday and is being held at the Erie County holding center on $500,000 bail.