A controversial Massachusetts school is in the spotlight again after a weekend brawl at a group home it operates sent three teenage residents to the hospital.

Police were called to the Canton, Mass. group home run by the Judge Rotenberg Educational Center on Friday after a 30-minute fight involving students and several staff members erupted. It is unclear what sparked the altercation, but one officer at the scene said a student told her he feared for his safety at the home.

Three of the home’s eight residents were treated at an area hospital for injuries ranging from a broken wrist to a broken hip.

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Earlier this year the Justice Department said it was investigating the Judge Rotenberg center, which has long raised the ire of advocates for using electrical skin shocks as one means to control students. At the same time, the Massachusetts attorney general’s office also said it was investigating the school. Previous attempts to close the facility have been unsuccessful.

Students at the school have diagnoses ranging from behavioral disorders to autism and intellectual disabilities, reports The Boston Globe. To read more click here.

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