Three students were arrested Wednesday after a fight broke out during school dismissal at Crosby High School in Waterbury and another student was arrested Thursday.
Police said officers were called to the school around 1:50 p.m. after a staff member tried to stop the fight, which involved four students, and was hit. The school resource officer jumped in to help break things up.
One student was treated by the school nurse for minor injuries. The staff member was bruised on the arm, according to police.
"Safety is our top priority amongst our students and staff and we do not condone violent behavior. We have taken the appropriate measures consistent with the student code of conduct," a Waterbury Public Schools spokesperson said in a statement.
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Three students, two 17-year-olds and one 16-year-old, were arrested and charged with third-degree assault and breach of peace. They were not identified due to their ages.
On Thursday, school officials said an additional arrest was made Thursday. They said the student disclosed an involvement during the physical altercation and disciplinary measures have been taken.
Police did not release any additional details.