A 14-year-old Massachusetts boy sexually assaulted his popular high school algebra teacher with an object before killing her and stealing her credit cards and iPhone, according to an indictment issued Thursday.
Philip Chism has been held without bail since the Oct. 22 slaying of 24-year-old Colleen Ritzer, whose body was found behind Danvers High School.
"The indictments returned today detail horrific and unspeakable acts," Essex County District Attorney Jonathan Blodgett said.
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The indictment says Chism, armed with a box cutter, also stole Ritzer's underwear. A ruling on her exact cause of death is pending.
Chism had previously pleaded not guilty to a murder charge. A message seeking comment was left with his attorney Thursday. The indictment adds charges of aggravated rape and armed robbery.
Prosecutors have not revealed a motive for the killing, though two classmates said Chism was in Ritzer's class after dismissal the day she was killed.
Chism had moved to Massachusetts from Tennessee before the start of the school year and played on the school's junior varsity soccer team.
Court records indicate Chism's parents had difficulties early in their marriage. In a parenting plan included in 2001 divorce papers, his mother, Diana, insisted on supervising any time her husband, Stacy, had with their son and a younger daughter. She cited "prior physical and emotional abuse as well as alcohol abuse" by her husband. Both adults signed the papers.
The divorce was apparently never finalized after both parents signed an order stating they wanted to attempt to reconcile.
Shortly after the killing, Diana Chism released a statement through her son's public defender saying she was heartbroken for Ritzer's family.
Ritzer was described as an enthusiastic, caring teacher who stood outside her classroom and greeted all students, whether they were in her classes or not.
Ritzer's family has established a scholarship to honor her "tireless and dedicated work." It will benefit graduates of Andover High School, in her hometown, who pursue a teaching career.