Eric Raymond Yates confessed to police that he stabbed his mother up to 30 times with a nine-inchknife last Wednesday, according to court documents. Police found Christine Windstein, 57, lying dead in her trailer Friday evening when neighbors called 911, concerned because they hadn?t seen her in days.

They also found in the home a wooden-handled knife Yates described using, and he had blood stains on his jeans and a cut on his hand, according to court documents.