Three teens have been arrested in connection to a massive brawl outside Brentwood High School that included more than 100 people.

Police say the fight broke out Tuesday after summer school let out and involved students and non-students. According to police, a 17-year-old boy and a 16-year-old girl were stabbed in their sides. A 15-year-old boy was stabbed in the chest and a 16-year-old was hit in the head, police say.

Ronald Catalan, 18, of Bay Shore, was arrested for gang assault in connection with the incident. Two 15-year-olds from Brentwood were also arrested.

Students who witnessed the fight say it was mainly between two different gangs. Newsday - Cops: 4 students hurt inBrentwood brawl, 3 arrested