Teen coerced into confessing to teacher's murder, atty says

SALEM, Mass. - Lawyers for a Massachusetts teenager charged with killing his teacher on school grounds say police coerced him into waiving his rights and making detailed statements about the murder.

Philip Chism, 15, has been charged as an adult with murder and aggravated rape in the October 2013 slaying of Colleen Ritzer, his 24-year-old math teacher at Danvers High School.

Chism's public defender, Denise Regan, is expected to argue in Essex County Superior Court on Friday that police never properly read Chism his Miranda rights and continued to question Chism even after he had invoked his right to remain silent and his mother had asked for a lawyer.

Regan's legal brief argues police pressured Chism's mother into helping them get a confession out of her son while he was handcuffed in a police interrogation room, according to The Salem News.

Prosecutors allege in previous court filings that on Oct. 22, 2013, Chism followed Ritzer into the girl's bathroom after school, raped her and "repeatedly asphyxiated her before or while assaulting her with a box cutter."

They said Chism put Ritzer's mutilated body in a recycling bin and dumped it in the woods. He also took Ritzer's cellphone, which he destroyed, and her wallet, from which he used a credit card to buy fast food and attend a movie at a mall later that day, according to prosecutors.

Chism has pleaded not guilty to those charges as well as to attempted murder and other charges stemming from an alleged assault on a Department of Youth Services worker while in custody for Ritzer's murder.