The state prison guards union has released a “horrifying” video of this week’s attack at Souza Baranowski Correctional Center in Lancaster.

The Massachusetts Correction Officers Federated Union shared footage of an assault on officers inside Souza Baranowski ...

New video released on Friday shows a violent attack on corrections officers carried out by inmates at the Souza Baranowski ...

"The video shocks the conscience," said the union, which is pushing for security reforms across Massachusetts prisons.

Five officers were taken to hospitals for treatment. One was stabbed 12 times, and another suffered a punctured lung.

“The video shocks the conscience,” the Massachusetts Correction Officers Federated Union Executive Board said in a statement.

"The video shocks the conscience," the union's executive board said in a statement. "Suffice it to say the Executive Board of ...

The five officers at the Souza-Baranowski Correctional Center in Lancaster were taken to hospitals after the confrontation ...

New surveillance video shows the moment a pair of inmates attacked correction officers at Souza-Baranowski Correctional ...

Surveillance video from inside a Massachusetts prison shows a brutal attack by inmates on correction officers.

A state senator is calling for increased action from officials to improve the culture at a maximum security prison after an ...

WARNING: The above video is graphic, and some people may find it hard to watch. Surveillance video was released Friday ...