Philip Chism, 15, is accused of raping and killing Danvers High School teacher Colleen Ritzer after she asked him to stay after school for help. He has pleaded not guilty to charges of murder and aggravated rape.
In a search warrant affidavit filed by state Trooper Steven Buccheri, police say Chism made the admission while they were interviewing him at the Danvers police station.
Chism, with his mother present, waived his Miranda rights and agreed to talk, police said. At the time, investigators were searching the woods near the school but had not yet found Ritzer's body.
In addition to murder, he was charged with aggravated rape for allegedly sexually assaulting Ritzer with a stick. An Essex County grand jury indicted him Friday on a second count of aggravated rape for forcibly having sexual intercourse with Ritzer.
Ritzer's body was found in woods near the school with her throat slit and a note reading, "I hate you all."
http://www.usatoday.com/story/news/nation/2014/01/27/teacher-killing/4947469/
