Philip Chism Allegedly Choked and Beat State Worker

New details emerged today about teenage murder suspect Philip Chism’s alleged attack on a female employee at a Department of Youth Services facility in Boston earlier this month.

In an affidavit filed in Salem Superior Court, Essex County prosecutors said they have “serious concerns regarding the safety of staff, patients and the public while the defendant is housed at Worcester State Hospital,” The Boston Globe reports.

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But while at the secure facility on June 3, prosecutors say, he took steps to elude staff assigned to observe him, walked out of a “downtime” room, followed a female counselor into a locker room/bathroom area, and attacked her.

MacDougall said in her affidavit that Chism, armed with a pencil, attacked the DYS staffer after cornering her in the bathroom.

Chism choked and beat the employee on the head and face before other staffers were able to retrain him, according to the Globe report.

He was originally held in a DYS facility in Boston, but was taken to the state mental hospital in Worcester for evaluation after the alleged attack.

The incident shared some similarities to the slaying of Danvers High School math teacher Colleen Ritzer. Chism is charged with first-degree murder and two counts of aggravated rape in the October 2013 slaying. According to authorities, Chism followed Ritzer into a bathroom, attacked her, and later dumped her body in a wooded area near the school.

Chism is awaiting trial in the Ritzer murder case. He was originally held in a DYS facility in Boston, but was taken to the state mental hospital in Worcester for evaluation after the alleged attack on the female employee.

Read the affidavit from prosecutors regarding DYS incident